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Would you put a single 2" intake tube on a 500hp na motor? Shoot even 300-350hp na setups usually has a 70-90mm tb and 3" + air intake from the factory. So while yes the turbos are speeding up air and can move more air through that single 2" pipe you mention, its doing it inefficiently. Lots of pumping loss and additionally heat and its diminishing returns, because now the turbos have to spin faster and work harder to deliver that air to the motor which in turn creates more heat and pushes the compressor to a less efficient pressure ratio on its given compressor map. You want to step up pipe size at merges. The pipe sizes are based on your power goal and what you can fit for the setup. The twin kit I did I wanted to support 1000rwhp efficiently. (turns out it was capable of alot more because it was so efficient and iat's were so low) My t3 turbos had 2" outlets at the compressor covers, I stepped up to 2.25" pipe immediately at the exit of each turbo (this also improves turbo pressure ratio) then the two 2.25" pipes merged in a Y to 3" and then ran 3" pipe up to my intercooler (4" core A2a) and I ran 3.5" pipe from intercooler to tb. Our IAT's at 1000rwhp were within 10 degrees of ambient on a 350hp na motor. I dont know the power goal in your scenario but yes a single 2 inch from both turbos to the intercooler would be terribley inefficient I would wager your leaving 70-100hp on the table at 1000hp of flow. The 4" from the intercooler to the tb sounds great. Even better than what I did, if you ran two 2" pipes from each turbo to the intercooler inlet separately that would make a huge difference. Obviously you have to work with the setup. If its race setup make it fit. In my case I was designing a kit for customers who would want an easy install and that do different styles of driving. So there is always give and take on kit design. I love designing kits for race applications because you just cut and move stuff and make them extremely efficient. I was tired of seeing big name companies putting out lacking kits lol

@@lightblade543 Holy!! that's a hell of a reply bro thank so much lol. I'm currently figuring out my future setup which is why I commented my original question just to gain some knowledge. My current plan is to do twins and 2inch cold side charge pipes is exactly what I was planning to run its a ls3 that probably makes around 530ish crank hp so I'm not too worried about spooling two gt3582's or any similar turbo but I just don't want a choked-out system. For 700-800hp crank hp max I should be fine. I've been seeing people say to ditch the long tubes and 3inch exhaust so I'm currently researching all the facts Mainly im thinking should I keep my NA setup setup exhaust and use it for the hot side or swap over to the Stock manifolds which is all 2.5 inch. My NA setup is 1 7/8" headers that turns into 3 inch longtubes through the xpipe and then there is a merge to the stock exhaust thats 2.5inch Im just going to cut the mufflers off and run the 2.5inch pipes to each turbo (Yes, remote mount lol) Haven't seen it done but I'm curious how it might be with the hot side wrapped.

@Dookamonnnn stock cast stuff holds heat better. I run stock manifolds whenever I can. I like to coat which is better at protecting the pipe and keeping heat inside. Wrap is better at protecting things nearby but can fatigue the metal and hold in moisture. If I use wrap I like to hi temp coat first best of both worlds.

If you go with sizes that are just above your power goal your system will remain efficient. Without experience on that specific motor setup I would be leaning towards 1. or just 3" the whole way, 2.75 is an odd size to order parts for. Also knowing that gearheads always like to turn up the dial I always like to make it capable of more. My single kit for the 4.6 v8 was designed to support 1000hp even if the customer was only going to run low boost and select a smaller turbo to run 500-600hp, iat's were ambient.

If you stepped up from turbo outlet with a 2.5" to 3" coupler and ran 3" pipe the whole way that would be better to support what your 62mm compressor is capable of. Next step better is up sizing from intercooler to tb to 3.5". (you want to modify the intercooler end tank outlet to that size vice stepping up with a coupler out of the intercooler this is a critical area in the system where you dont want to loose density and put heat back in the air charge)Your kit or charge system would then be capable of more than the turbo which in turn means you can run that 6266 as hard as you want and still get efficient flow because the system can support a bigger turbo. No real downside. You would make the same power as controlled by your wastegate at a lower compressor speed and lower iat's, the other part is your getting air mass to the engine easier/quicker, that means more mass in the exhaust, which is more energy to drive the turbine. You would likely see more lowend torque more response and peak boost at a lower rpm as well.

buy from a reputable dealer, if the price is too good to be true it probably is

13.5 and 17.5

Indeed it wasn't cheap.

I have twin gen 3 6062 comp water cooled turbos on my coyote. They're at least 4 years old and still going strong. I run from 7 to 16 pounds on multiple settings, on e85. They spool fast and pull hard, and are still tight. Love not having to worry about cooling them off before shutting the car down, and never have to worry about a leaking oil seal, feed/drain issues, or oil lines.

Was a modified oem used fuel hat.

@@lightblade543 so lets say they are 300 lph, what stock fuel pump lph of gt 05 09?

@@raimondhyperburia3855 around 180lph

It's from a junkyard. It's not a seperate orderable part. To get a new one you have to purchase the entire fuel tank assembly afaik.

My thoughts exactly. all this work to test it out and he dont even up the pressure to 50-60-70psi that the pump would have to run for boost pressures of 10-30 psi.

@@HellTriX no one is buying this pump for an all motor / NA car. Useless test!

Interesting question. The fiber reinforcement in most will resistance permanent bending. My first thought would be to use metal wire and shape it how you like and then put it inside the hose. Etc.

@@lightblade543 With the wire inside I'm afraid it still might get some kinks, I thought to wire around outside and then bend. For right now I'll put a few metal clamps in the area of possible kinks. Thank you for your answer.

@@olenaerhardt7725 no prob to prevent kinking maybe try some copper or aluminum metal tubing that's closer to the inside diameter of the hose that way helps retain the round shape when bending.

I'm not speaking for S&H here and his test is a great piece of info. However, from experience I have a JMS booster on this pump running e85 for the last 2000 miles without issue. Does that mean it will last forever? No but so far so good.

What size fuse are you running for the BAP ?

Yup similar performance with slight edge to the F90000295.

@@lightblade543 that's good to hear because I run two walbro 255s now and would like to switch to just a single fuel pump.

@@lightblade543 what’s difference between 285&295. The one on Amazon doesn’t say no check valve.

@@BimmerMafia 285 has a checkvalve and flows 475lph at 40psi. 295 has no check outlet check valve and thus flows better 530lph at 40psi.

@@lightblade543 40psi. My car will never see that. I need to be at constant 70psi. I went ahead and ordered the 525.

Can or should? Thats up to you, it's not what it's designed for obviously.

Throughout but you can get away with a step smaller from turbo to intercooler as mentioned. If I was plumbing the described setup I'd probably do 2" turbo to intercooler and 2.5" intercooler to tb. Just as those are more common size pipes and couplers.

What do you mean?

Not 100% sure what your describing but if we are talking post turbine exhuast size, as long as exhuast is 25% bigger than turbine wheel diameter for 25% of the length of the exhuast leaving the turbine before split, reduction dump etc. You are good. Anything larger than that is only needed when your probably at too high of a pressure ratio causing excessive back pressure.

@@lightblade543 I was referring to the turbo hole that connects to the pipe that also connects to the intercooler, I think they call it turbo muffler delete. So In that area I want it to see if the hole can be made bigger

@@rankmeuptoday2119 ahh. Compressor outlet volute size. You can get different sizes but it's often matched to compressor size. They are usually cast and thick so you could port the inside. Would be like a maximum effort type thing.

@@lightblade543 cool thanks a lot!!!

That's fine intercooler inlet outlet should match pipe size at a minimum if it's a step bigger that's fine but wouldn't want it smaller.

@@lightblade543 thanks for the quick response. I appreciate it!

Awesome, glad it helped.