Honda Jazz / Fit - VTEC on vs VTEC off
ฝัง
- เผยแพร่เมื่อ 4 ต.ค. 2020
- I decided to put my '07 Honda Jazz 1.5 VTEC on the dyno to see how much of a difference VTEC on vs VTEC off would make and the results are quite surprising.
Specs :
'07 Honda Jazz 1.5 VTEC
L15A1
Manual Swapped (Originally CVT-7)
"Custom" Intake
Catless Midpipe
Big thank you to J2 Performance for allowing me to use their dyno
/ j2performance_wc
/ j2performance-11390917...
*Also sorry for the abrupt cuts after the dyno runs, I am 100% clueless when it comes to editing videos - ยานยนต์และพาหนะ
![ทัศนศึกษาโรงงานผลิตโค้ก [THAI/ENG SUB]](http://i.ytimg.com/vi/M9y-TJBNem0/mqdefault.jpg)
Some clarification for those who want to know how I'm going from 12 valve operation to 16 valve operation.
My Jazz was originally CVT-7. I completed a manual swap not too long ago and unfortunately the stock 1.5 AT ECU does not like missing sensors so it won't allow me to rev over 4000rpm. I couldn't find a 1.5 MT ECU anywhere so I resorted to using the 1.3 i-DSI ECU and I have VTEC wired to 12v+ so it's always in 16 valve mode, however if I unplug the solenoid then I'm back to 12 valve mode.
I've imported a new ECU and it should be here within the next 2 months. I'll put the Jazz back on the dyno after it's installed.
Did your 1.3 i-dsi ecu came from a MT?
@@noahpalma1782 Hey, yes it did
ooo another fellow Fit owner
Ayyyy! Mine is actually a Jazz but I mean, I like the Fit moniker a lot better.
Awesome vid, that 30+ kw gain.
That's as much as going from J2's dyno to a dyno that specializes in preparing meals
@@Pynoxim1 dite is life!
I wonder what the economy would be like in 12v mode... Looking forward to seeing the gains with the correct ecu. And then hopefully seeing it tuned with more fuel and timing thrown at it. 😬
I do believe that it was all economy in 12v mode lol. It went down to around 6.1L/100km which is far from what it currently is. Thanks for the comment man, keen to get some more content going on the MK2.
If you want cheaper way to save fuel, kindly buy 110c motorcycle. It’s just you and engine on motorcycle.
@@vongsakra253919 Commenting on a comment that's 2 years old isn't ideal. This car is K24 now. We've moved on from talking about saving fuel.
Hi there, any way to contact you on how to find the l15 vtec solenoid? I want to put it to 12v so its always engaged for a little bump in powrr
This must be witchcraft
😂😂😂
Hi Andrew.
Your Namibian friend is watching. Keep the vidz coming
Thanks Seth, I'm still waiting for your next episode to come out
Great. So was it actually a gain or thats the stock figure?
Well, it’s more of a showcase than anything to show how important VTEC-e is in this example but the figures for the 16 valve mode are pretty close to what the OEM specifications are (81kw/145nm) which is impressive considering I’m using the wrong ECU.
how many hp increase after install intake?
Yo how do you make vtec kick in 2 gen jazz
Is the ecu plug and play? I have a L13a twinspark gd1 and I’d like to make it slightly less slow by swapping to a L15a. Hopefully it just needs the engine loom and L15a ecu and it should all work happily?
Hey, it’s almost plug and play, you just need to have the new ECU paired to your existing keys so that the immobiliser is happy but other than that everything is 95% plug and play.
So do u need a vtec engine or can u add vtec to a none? I only ask a s i have a 2005 honda jazz se sport 1.3/1.4 i-dsi ,and was tryna see if u can add without swapping the engine .many thanks😉
Hey! Unfortunately you have to change the engine as the stock L13A head doesn’t have oil channel provisions for VTEC, not does it have a spot for a VTEC solenoid.
@@Pynoxim1 ah ok,so what engine would it need changing to?
@@dragonheartcrafts2854 For a 2005 an L15A1 would work perfectly but you’d also need the ECU and engine harness.
@@Pynoxim1 ah ok. Thanks for the info appreciate it
Did The ecu shows any code? Since the i-dsi has 8 spark plugs.
I want to swap my l13 to a l15 i have the engine but it’s impossible to find an l15 mt ecu.
Hey man, it shows a code for the missing front coilpacks but it doesn' throw a CEL since it is wired to fire the rear coils as the main coils. You can use a 1.5 AT ECU though, just need to fit some resistors to tell the ECU that the AT box is still there even though it isn't.
@@Pynoxim1 did the same transmission swap. I’m currently using the L15 AT ECU. Where do i place the resistors? And what kind of resistors should i use? Thanks in advance!
@@noahpalma1782 Hey, I can’t entirely remember which pins I resistored but I can definitely assist you in finding the pins needed. Can you send me an email at pyn0xim at gmail dot com
@@Pynoxim1 sent you an email!!
Question, what is the normal vtec switch over rpm, can it be heard?
Hey, so the normal switchover is between 2600-3600rpm and is based on vacuum/map readings. It can’t generally be heard however I do have an ECUMaster EMU Classic and if I set the crossover at 4500rpm or higher it is very audible.
Awesome, thanks so much, I've got a manual 1.5 gd3 and looking to start playing around, I've had a few b series eks and turbo big bore b16a, but here in S.A it's become quite expensive to build them
@@demetreprokopis6489 If you want real Vtec you could use an L15A7 from a GE8. It has actual lift. If you want to use the stock ECU with that you’ll need to move the crank and cam triggers over from the L15A1 and maybe use Unichip to activate VTEC properly.
@@Pynoxim1 just use a window rpm switch to activate. Has this ever been done with the head swap?
@@heyitsmedoug8397 Hey! This was mostly just for testing. Since this video a lot has changed (K-Swapped). That’s a good idea though, a window switch is potentially a good solution for those still using the L13A1 ECU.
Hello Friend how are you? I am the happy owner of a Jazz, mine is the L13a I-Dsi Manual model, I want to install the Vtec engine like the one in your Jazz, tell me that my computer works without problems? does it work friend? Would I only buy the motor and wiring? Please clarify my doubt.
Hey! It will indeed work, the only thing is that you'll have to wire up the VTEC solenoid to ignition so that it's always on otherwise you will only be running in 12-valve mode. Everything else will be the same though.
Selam Türkiye'den 2006 1.4 cc jazz arabama l15 motoru taktırdım beyin yok direnç icin ne yapmam gerekli bobinlerin + - baglantı şemasını bana atarmısınız?
Hey! Sanırım muhtemelen VTEC solenoidini bağlamak istiyorsunuz? Polaritesi yoktur, bu nedenle bir taraf kontaktan veya röleden 12v+ ve diğer taraf motora topraktır.
çözebildin mi bunu
How do you turn on vtec?
I just wired the solenoid straight to battery power so when plugged in it was always on and when unplugged it was off.
How to turn on vtec in brio L12B? Is that possible?
That’s not an l15 a1. I don’t think it’s even vtec. But 1.3 idsi engine. vtec should Rev to 6800 rpm if want more power ditch cold air intake and use stock air box and good quality filter
Hey. It's an L15A1. The engine number noted on the engine block is L15A1 as well as on my license disc. It has 4 spark plugs as opposed to the 8 on the L13A1 iDSI. With the stock airbox and exhaust it made 2.6kw less than with the intake and exhaust. The exhaust actually made no difference. Ditching the stock airbox made all the difference (Even just the intake minus the filter). Also, L15A1 has an RPM limiter of 6300RPM whereas L15A7 has an RPM limiter of 6800RPM. Also the reason the power figures are so different is because I physically unplugged the VTEC solenoid on the front of the head which is something only the GD3 L15A1 has. Either way this isn't really an issue anymore, the Jazz is turbocharged at the moment.
Also, a good read for you regarding the L13A and L15A - asia.vtec.net/Series/FitJazz/lseries/