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@NDEEZMiata nothing detected on datalogging, I can't see a reason why there would be any difference in airflow. I stuck the diaphragm at the firewall end so it's a little further away from heat, and easier for customers (no assembly required), but as you've found it works ok at either end 👌😎

@@CleaR-Motorsport ah that’s a good idea, didn’t think about that. The way mine is setup that’s the only place to seal it. Definitely more of a budget hack job, but it works and sounds good. I periodically check it to see if it’s holding up and keep a spare glove in the trunk just in case lol I think I’m using both “sides” of a 3-4mm nitrile glove. If it eventually lets go I may try the 9mm gloves I have around. Likely won’t be as loud but might hold up better. If I wasn’t across the pond would have bought your kit, seems really well designed. Dad life means can’t easily justify $100+ on a sound tube unfortunately. Just happy to still have a Miata at all right now😂 Cheers!

@jun5523 I am sorry but I cannot understand what you mean. Please could you try to explain in a different way? Thank you!

The foils that you wrapped around the intake pipe I guess? And now I can only find the product without the elbow, do you guys have the product with the elbow? Sorry my English isn't perfect.😅 Thank you!

@jun5523 I understand now, thanks 🙏 This foil is not related to the sound tube. It was an experiment to see if I could reduce the temperature if the air going into the engine. It worked, but only changed by 1-2 degrees, so I would not bother doing it again! I hope that helps and makes sense.

@jun5523 it looks like the 'with elbow' version is out of stock at the moment, if you message Car Cottage on eBay they should be able to help. Thanks.

@@CleaR-Motorsport Thank you so much for your help🫡 I ordered one right awayy😁

@fasthracing I made it. No plans for production at this time.

@@CleaR-Motorsport That a shame would prob have one off you.

@@fasthracing thanks for your support. If you find Andy Leslie on the UK ND Owners Facebook page, he sells a nice one 👍

@fasthracing so far, customers with 2L cars and the OEM upper bracing have reported a slightly tighter-feeling front end and improved steering response.

@@CleaR-Motorsport Cheers. Will be buying one. Just been on your website and it doesn't seem to list the parts you do for MX-5's?

@@fasthracing purchase link is in video description 👍

@@CleaR-Motorsport Ordered

@fasthracing thank you, hope you like it! Feedback always welcome 🙏😎

@rasmusjensen3852 Hello! Yes, check the eBay link in the video description, all the information is there. Thank you.

@bayerischemotorenwerke5252 that's pretty much correct, yes. From my testing I found that thicker and less flexible diaphragms give less noise than thinner / more flexible ones too. There also appears to be a resonant frequency or frequencies where the diaphragm will make a "fart" type noise, which is affected by the above but can also be adjusted by how much tension is in the diaphragm. Happy experimenting!

@@CleaR-Motorsport That's interesting because BMW and other manufacturers actually sell a module/device called a "Sound Generator" which they claim has an internal diaphragm that amplifies induction noise somehow. It was found on cars like the E46 Compact and Z4

@@bayerischemotorenwerke5252 very cool! The benefits of having a huge R&D team / budget, compared with one man in a shed, haha.

@@CleaR-Motorsport Don't worry, I think your tube is louder than their device anyway lol

@@bayerischemotorenwerke5252 Ha, alright! Though I think finding a balance between volume and refinement is the trickiest bit, I am sure as an OEM they need to have the balance a bit further towards refinement so not to annoy the majority of owners.

Great to hear it has done as intended! Thanks for your purchase, and feedback.

@MatthewMessinger have two customers who have done exactly this, both report a noticeable positive change in steering feel 👍

@@alfiebarbone3641 I couldn't find one that suited my requirements, so built one 👍

@@CleaR-Motorsport I'm picking you on my team! LOL

Thanks. Understood about the cost, completely see how that can be a deal-breaker. Though I do see this and the OEM replacement panel as slightly different products.

@the_ambient_light Car Cottage now take car of all sales of these, message them via eBay and ask for the kit without elbow. They should then reply with an offer at reduced cost for the partial kit. Thanks.

@@CleaR-Motorsport Thanks for the reply I will message them.

Just recieved it today. How do I remove the pink sponge bung to get more noise, without damaging it?

@the_ambient_light anything long and thin, like a small flat bladed screwdriver, piece of wire, paperclip bent to shape, etc 👍 Thanks for your purchase! Hope you like it.

@@CleaR-Motorsport Just tried that and the one in there was pushed so far in, it’s now fallen inside?

@the_ambient_light Hello! I don't think I can post a link here, so if you search eBay for "CleaR Motorsport Sound Tube", you'll find them. Thanks!

@the_ambient_light I'll try the link too... www.ebay.co.uk/itm/405088240194

@@CleaR-Motorsport Hi thanks for getting back to me. I see the kit but I don’t think I need the 90 degree part with the extra small hose that goes back to the engine? I have a 1.5 with a standard sound tube. Is it possible to buy without this?

@the_ambient_light yes, I have replied to your other message on the other video.

@michaeldixon6251 honestly, I don't have test data from this length of time, however there are two diaphragms in here. The main barrier is 0.33mm thick, made of a material which has an elongation at break of 800% and a strength after age-related degradation of 14MPa (just over 2000psi). I have tried multiple times to break one of these by hand and can't, for obvious reasons when you consider the strength rating of the material! Shipping to the US is no problem, check the link in the video description for an eBay link. Please ask if you'd like to know anything else. Thanks!

@@CleaR-Motorsport cool, can’t wait to get mine! Need to upgrade the sound of my stock nd

@@michaeldixon6251 thank you! I hope you like it.

Thank you so much for your purchase, and also for taking the time to add your feedback - I am really pleased it has achieved exactly what you wanted! Interestingly, nearly all of the people I chat to who own NDs are similar in their approach / preferences. They tend to be a little more 'mature' and have done lots of car modding in the past, so appreciate the nuance of finding a nice balance in various aspects of the car. Instead of having it super loud and harsh at all times, they often like it to be as close to OEM / stock as possible for 'normal' driving, but have it 'wake up' (across all sensations) when going for the gas pedal. I worked really hard to find that balance with the sound tube so I am super glad to have met your expectations here. Thanks again!

I'm having the same experience on my 2017 ND1. I got this sound tube, put the most aggressive (smallest) foam in, and I really like the extra sound volume in the interior, without spilling a bunch of loudness to annoy people outside of my car like an obnoxious exhaust

Of course! Contact Car Cottage on eBay (link to their shop in the video description) and John / Jess will sort you out. The price is of course lower than the full kit, too.

I guess this response "flies slightly close to the sun" as there is already another kit shown up which has taken, er, very close inspiration from this one, but there are actually two skins to the diaphragm. One is 0.33mm thick, made of a material that has an elongation to break of 800% and minimum strength after ageing of 14MPa. The second skin is 0.12mm / 400% / 10MPa. There is also something sandwiched between the two skins to cut down unwanted 'fart' noises which occur around 2000-3000rpm on mid throttle with just a single skin. The firewall adaptor and these two skins are a firm push fit into the tubing, then sealed with the clamp. Around 40 kits sold so far and ~6 months on my car (including a couple of track days) with no problems, so I am confident of durability and reliability. However, I completely understand if you would need more long-term data before making a decision. Cheers!

@@CleaR-Motorsport wow this is a great detailed responce. I've seen some folks make some DIY tubes that do not inspire confidence. thank you

@@joker927 You are very welcome - we are all car dudes and I feel sharing stuff like this is important! Please do shout up if you'd like to ask anything else.

Eagle eyes! These are 3D printed brake cooling scoops. I'm playing around with brake cooling ideas, with the aim of releasing a kit in the future.

I seen this bar on the side earlier :) wondered what it was for 😂 now I know

@@CleaR-Motorsporthave you seen the Porsche brake duct cooling hack for Miata ND?

@texrx I have, thanks for mentioning it!

Definitely see how that will give you a bunch more induction noise in the cabin, great job and I am pleased you love it! Personally I didn't want to open up the firewall hole, and I think a lot of people are in the same position, hence developing this fully reversible option.

@@CleaR-Motorsport totally. It took a lot of thought and brave pills before I did it!

@@CleaR-Motorsportwhat strut brace do you have?

@@zzkamikazezz Haha! Fair play. I did actually hover over the car with drill in hand once, but couldn't go through with it 😆

@@zzkamikazezz It was a cheapo one off eBay here in the UK, which doesn't seem to be available any more. Appears to be identical to the V1 GoodWin Racing item, and the same as AutoExe. Very light, added less than 1kg to the car, and a significant difference over nothing (perhaps wouldn't make a notable change over the OEM Mazda brace though).

This isn't something I have available unfortunately, it was just knocked up 'out of necessity' and I don't think it would be a universal fit for every car.

I just installed mine this weekend and I love it as well! Love the new sounds my car makes now with the growling and burbles right around 4500rpm. I do notice that sound similar to air sucking through a straw, which I would prefer to be silent, but not bad. But if you figure out a way to get rid of it, please let me know haha.

Thank you very much for such a detailed review, I am glad you like it overall. So sorry that the tracking was a little hit and miss. The international shipping service is provided by eBay who I honestly thought had this nailed down. If I hear similar from another customer then I will be sure to look at alternative options. The slight mechanical / sucky noise is something I noticed a little during testing, but deemed it a fair compromise also. With the roof off the 'air' noise seems to blend in / be covered up by the general wind noise in the cabin, but I appreciate what you are saying about it as of course not every drive is a roof-off affair. There is some stuff going on with the diaphragm which I developed to kill this a little - but it's a fine balance between getting rid of the unwanted frequencies and keeping the desireable ones! I am sure a proper sound engineer could figure this out, haha. Thanks again for your purchase and feedback, I appreciate it.

@@michaelchow183 Glad you like it also! I will work on an 'air noise' fix which can be applied as a DIY, and if anything seems to do the job, I will of course post back. Thanks for your feedback!

​@@CleaR-Motorsport Thank you for making this. Overall experience was great! Shipping speed wasn't bad at all, considering shipping from UK to US, price was fair, ease of installation was a breeze. Product is honestly amazing, I drove the car the entire weekend with the new sound mod, and it's just as satisfying as a new exhaust. It sounds more raw and faster than the car actually is haha. But please, I would love to hear a DIY fix for that 'air noise', that would be icing on the cake.

@@CleaR-Motorsport I didn't mean the bit about tracking as a complaint or anything. It's fine. It got here plenty quick enough. It was just a note to let Americans know to expect it. I definitely agree that with the top down, it will drown out some of the sucking sound. it was 115 Fahrenheit {46 C} while i was driving. The top doesn't come down till it gets down into the 80's {26 C} around November. Then it's top down till like April. I'm sure someone could figure out how to reduce the sucking sound, while kepping the bass, but it's way beyond my capabilities. If you ever figure it out, I'll buy the new version too. As it is, it's a massive upgrade to the experience. I'll never take it off. Well done. Thanks.

Yes, I run a small tuning company, so do my own tuning. Rev limiter here is 8000rpm, so it goes past 8000 on the dial since the tach reads 200-300rpm high at full rpm.

@@CleaR-Motorsport really nice, are you not afraid to cause damage to the engine going so high in rpm ?

Thanks. I guess a little bit! However, I don't rev it that high very often at all, since power drop off around 7500. It is just nice to have the extra revs available if needed.

Hello! Thanks so much for your kind message. I really appreciate that you appreciate the time / effort / thought that has gone in :-) As you rightly said, these small parts aren't exactly life-changing but do help the driver to 'gel' with the car a little better, improving the experience. The one that went to Portugal seems to have got stuck in customs... ack... and the chap in the USA went on vacation and hasn't got back to me since. If you would be interested in helping test one of them, please get in touch directly and we can hopefulyl work something out. Thank you!

Duh, early morning brain... some contact details might be useful. clearmotorsport@gmail.com Thanks!

@@CleaR-Motorsport I'd be honored! Will reach out to you sir!

@@CleaR-Motorsport I sent an email yesterday, just wondering if you received it?

Thanks! Was ~2800rpm at 70mph in 6th, now ~4100rpm. Fuel economy dropped from ~60mpg to ~50mpg. (About 4.7l/100km vs 5.65)

Thanks for the answer. An increase in consumption, a price to pay, but I believe the car has become completely more interesting!

You're very welcome ​@pedropedrosa1935 ! I agree, every modification has a trade-off, but for me this one is worth it 👍

Thank you! It is... a bit less comfortable than stock 😅 around 4100rpm. I tend to drive at 60mph / 3500rpm instead, still returns 50mpg easily.

Reminds me of my mk1 1.6! 😅

@SSS1k26 ha, agreed. That's basically what I've tried to do with this car - modern tech / comfort / interior, but oldskool driving feel and feedback.

Sounds like you are already well on the way to an empty wallet 😁 thank you very much for your purchase, it'll be on the way to you soon. Enjoy and thanks again!

@@CleaR-Motorsport It's ok, I had to sell my wallet to help pay for rims..Can't wait for this. Thanks

@@HotCarl73 😆 A true petrolhead... Thank you once again, and enjoy your new car!

Thank you for your order! Yeah, the eBay Global Shipping Program includes all import fees, so you dont have an additional amount to pay on arrival (yay Brexit 🙄). I hope the sound tube is worth to you the amount you chose to pay for it👍

​@@CleaR-Motorsport i got it this week it's worth every penny thank you dude. 👊😁

@kristijan8989 oh awesome, that arrived pretty quickly! So glad you like it, thank you very much for the feedback 👍😎

Yes 👍

@@CleaR-Motorsport does it make it louder? because nd2 already has one. do you just replace the current one on there? thank you!

@Onewheel-MTB that's right yes, it is considerably louder. I have a few customers already who have replaced the OEM item with mine and notice the difference immediately. Exactly, just remove the stock one (couple of 10mm bolts, then the end pulls out of the firewall) and then mine can be fitted 👍

@@CleaR-Motorsport Thanks! Just made an order from California :D

@@Onewheel-MTB thank you! I hope you love it 😎

It's a huge difference yes, around 40%. Top of 3rd gear is now ~60mph instead of 90mph, for example. The stock ratio is 2.86, I have 4.1, and the Fiat is either 3.45 or 3.58 depending on if the car is an auto or manual (around 20% shorter than the ND manual).

@@CleaR-Motorsport wow, just as well it has a lovely gear change! Have you ever given any thought to the steering, how much assistance is the EPS giving at speed etc, I find it very light, wonder if it could be turned off above a certain speed? Maybe it is already…

@Schnorbitz haha yes! Part of the reason I did the mod was so I could change gear more often, its so enjoyable in this car with the great shift feel, adjusted neutral throttle blip response in the tune and my pedal extension plate. The ePAS is something talked a lot about on forums etc. I prefer less caster than OEM spec as this seems to make the steering system interfere less, and less offset (wider track) works well for me too, providing a bit more steering weight. I don't know of anyone who has "cracked" this to adjust settings yet.

Just gotta convince all the muppets out there that induction tone is as important as exhaust tone. You'll really encounter living day cave men if you ever get into this debate on the groups and forums.

First prototype on the way to Portugal as we speak, second heading to the USA soon 😎👍

If will! If you already have a sound tube from the factory, you just omit the 90 degree elbow. In this case, I can sell you a kit without this at a lower price if you like, feel free to get in touch directly. Not sure I can write an email address here, but it is my business name at gmail. Thanks!

Hello and thanks! Yes, I have one of my sound tubes fitted: th-cam.com/video/LEOZI3b22pA/w-d-xo.html

@@CleaR-Motorsport Awesome. Does it fit the 2.0 ND2 (LHD)?

@@nviorres Yes! Though if your car already has a sound tube, the 90 degree elbow that comes out of the intake pipe in my kit isn't needed - in this case feel free to give me a shout directly, and I can sell you a cheaper kit with less bits in, so you don't end up buying stuff you don't need 🙂

Hello! Thanks. It doesn't come across as well as I'd hoped on the video, but feedback has been great so far. These are great questions and thanks for asking them. I apologise in advance if my responses are a bit long winded...! So I originally tried one of these back when my car was standard and had an OEM silencer. I didn't like it. The sound appeared to come from under the dash too much, and it sounded fake. I since changed to a more shouty exhaust setup and the blend of tones from opposite corners works really nicely. This is why I supply the foam plugs, so you can change the sound level to blend exhaust and intake levels to your tastes - IMO it sounds 'wrong' if the car is only one or the other. Hope that makes sense. Yes, there is something else in the tube to create the seal, all pre-installed and hidden away neatly. The foam plugs are just to cut down noise levels, think of them as 'reverse earplugs'! If you already have a sound tube, then feel free to give me a shout directly and I can sell you a kit which doesn't include the 90 degree elbow coming out of the intake pipe. Seems silly for you to buy something you don't need and then just have it sat in the garage / tool box / bin! You can re-use the hose clamp at the intake end, but I will supply everything else from there onwards. Thanks.

Falken Sincera SN110, 185/60/15. The tread is actually only 125mm wide 😅 so not a lot of grip and plenty of "agility"!

​@@CleaR-MotorsportSincera 😂 Sounds like something from a toilet paper range. Nice driving, mate!

@harrylo2316 Ha! To be honest, the comedy name was part of the reason I chose them 😅 I think MX5s are more fun with less grip - as long as it is consistent and all 4 tyres are the same / same age, no need for bucketloads of grip. Thanks! 🙏

Ah, thank you! Many an hour (and pound) spent practicing 😆

@@CleaR-Motorsport I like your line into the first corner, shallower, less distance, but I can't really see a disadvantage for little wiggle then into Lancaster. I think I will have to remember to give that a go next time, looks quicker to me. Pedal cam is cool too, no messing about, left foot braking etc. Nice work!

​@@tchaps5130thanks! Yeah that line is a funny one, but it works. I've done a bit of sprinting here and datalogged it at a couple of tenths faster. I think its a combination of being able to brake really hard in a straight line (rather than a longer trail brake, since the entry phase is so long) and reduced distance travelled as you said. Not had a pedal cam in for years so also found it interesting to see what's going on! May widen the brake pedal now like I used to do in my previous Mk1s, makes that heel & toe downshift to left foot braking transition easier / smoother.

@@CleaR-Motorsport yeah I'm not surprised , have to slow it down a little earlier possibly but actually making the first part less tight and shorter, get on the throttle earlier and its not a problem be quicker through the mid bump then into Lancaster. Will try it next time. I shortshift 4th in Lancaster but it is a little out the powerband at the start of the corner, but then its right in the meat by the end. 3rd means I have to try to change gear with the car loaded up which is difficult and slows me down having to be very careful slotting the gear and managing everything else. Bit more speed through the mid part would get me higher in the revs at the start of Lanc which would be awesome. Anyways ramble over! See you soon!

@@tchaps5130 The classic 'catch 22' of track driving eh! I think you make a wise choice, I am sure the car has enough grunt to pull you out of there in 4th, haha. Running the kerb here helps a lot to straighten things out, you just have to make sure the left hand side of the car is loaded up before you hit the kerb, to give the right hand wheels plenty of travel otherwise it gets a kit skippy. Same thing at the Wiggler actually, though when you get this right you can actually use the kerb to turn the car, means you can get the steering straight sooner and back onto the power earlier. Public ramblings always welcome 🙃 Cheers!

Yes, my car is a 1.5L 👍

@@CleaR-Motorsport worth installing it with stock exhaust? I'm planning to change it in the future

@@DUBOMAR I think this is a tough one for me to answer, as everyone has their own preferences - but even with the largest foam plug installed, you will get some induction noise, more than stock. I have a couple of customers with stock exhausts who have installed the tube and love it! They originally had it with the plugs removed completely, but have since stuck the smaller one in since it was a bit too overpowering with the roof up. Hope that helps.

@@CleaR-Motorsport thx a lot mate, I got one 💪

@DUBOMAR you are very welcome. Thank you so much for your order! I hope you like it, please feel free to get in contact if you have any questions or feedback 👍😎

Haven't seen one in the flesh yet! I see no reason this won't fit, but feel free to send me a photo of the engine bay and I can confirm. Enjoy your new toy 😎

@@CleaR-Motorsport I’m hoping to build it into the ultimate fast road set up without compromising its daily comfort. I’m sure I’ll be in touch for some bits! Do you know if there is a competitor to the BBR220 kit? That’s the route I was thinking of going down.

@@Throttle.Monkey I would have a chat with BBR about that - as far as I am aware the ECU for the ND3 hasn't been 'unlocked' yet (and that might take some significant time). In terms of kit, the 220 setup appears popular. As with many things like this, there are various good and bad stories about BBRs work and customer service. Up to you to make the call on that one... Personally I would go to Swiatek or MMRSPL for cams / springs and manifold, add your exhaust of choice, then use a reputable tuner to pull it all together - but I am more of a 'DIY' fan.

@@CleaR-Motorsport that’s something I didn’t know! It’s been a toss up between a new ND3 or discounted ND2 so I’m assuming the ecu in that version would be fine? Do you have a website etc? It’d be good to get an idea of options you can provide and I’ve just seen you’ve done the final drive swap which is also on my radar!

@Throttle.Monkey yes the ND2 ECU is available for tweaking on various platforms. A bunch of info here, including a link to my options form: www.clearmotorsport.co.uk/services/remapping

I see no reason why not, but I haven't fitted one to the ND3 yet. If you wish to send me a photo of your engine bay, I could confirm either way. Thanks!

Midpipe is standard, and I built the manifold and silencer. Manifold is 4-1 without cat, 38mm primaries; silencer looks a bit like a BBR Super Sport but with a larger can, and 2" diameter with single exit to match the 1.5L engine and maintain exhaust gas speed as it cools down.

@@CleaR-Motorsport Cheers, pipe arrived today thanks.

@@Schnorbitz super! Thank you very much for your order. Hope you like it 😁

I haven't see the Verus unit in person / fitted a sound tube to a car with that kit on, so can't say with 100% certainty, but from looking at install photos I see no reason why not. The main tube will pass in front of the ECU and AOS as in this video, and the breather pipe can simply be rerouted and attached to the AOS as normal. Hope that helps! If you are overseas feel free to email me (business name at gmail.com) for an international shipping quote as the GSP pricing through eBay can be quite steep! Thanks.

I completely agree! The blend of exhaust and induction is important too, I think. Perhaps this hostility comes from the general feeling that the OEM part doesn't add much to the experience, so it is just "dead weight", when in fact enhancing the sound isn't too difficult and can make a real positive change.

Agree with this one. I'm too old to tolerate exhausts. Intake noise is all I need.

Thought the same, that rattle at the end sounds like a GT4RS

sounds just like the GT3 RS engine from 8300 to 9k rpm

After some research it appears not, unfortunately, but I have a guy in the USA (thanks Gavyn @RedHenRacing!) who is helping out with some dimensions so I can do a LHD version.

@@CleaR-Motorsport Gavyn is an awesome dude

@senfing certainly is! Got prototype LHD clutch stoppers today, one to go to Gavyn and another for a guy in Portugal (sent out to him today). Hoping they work so the design can be finalised and production started fairly soon!

That is interesting info, thanks for sharing!