I tune a lot of cars and some turbos I can push 25psi on pump and some are such crap I may only be able to push 20. Like exhaust side is to small so the car will be knocking at 20pis due to back pressure.

Bigger turbo cars can have over 200whp swing from straight 92 oct to C16. Also a big jetted meth kit can have well over 100hp over pump.

So I say on a 37r on 92oct 4xx is a good ball park.

I bet a 42R car could even have a 300whp swing from pump gas to race gas.

Eather way if Al tuned each car to what he though was a safe spot for the combo the turbo comp is somewhat worth while.

 

Good example on bad turbos I had a few mons back.

I had a 03 EVO we built with a 2.4 and it had a Apex RX6 turbo kit. The exhaust side was tiny. The turbo was claimed to be good for well over 500whp. Well on pump gas the best it would do is 360whp 18psi and way low timing and with my meth kit and 26psi we got 460whp.

Well 3 weeks later he picked up the ETS 35R kit and we put it on. No other changes in the car. Right form the start on pump we were 400whp and ended up at 545whp on pump meth. I was able to run 3psi and 3deg of timing more over the other turbo kit.

 

confusion

 

I have to say, the car feels like a beast more and more every day. Sometime next week I will take it to Etown, throw some race gas in it, raise the boost a peep and leave happy

If any one is in the danbury area and doubts the successful result, I'd be happy to give you whiplash.

 

The RX6 TCW77 is not a bad turbo (The CyberEVO was making over 700hp with one). The P20 exhaust housing is too small for high boost applications (even on the 2.0L). Throw it on a 2.4l and it makes it much worse. An upgrade to a P25 housing and the full potential of the turbo can be seen. The efficiency range of the turbo is between 30-38psi with the proper exhaust housing. Of course, the cost of a P25 exhaust housing costs the same as a new GT35R.

As for this GT37 vs 50 trim, I bet the problem with the 50 trim is with the .48 PTE exhaust housings RnR loved to use. That .48 was too restrictive on the 2.0l and on a 2.4l, mixed in with a short runner length manifold, would make the exhaust back pressure extremely high and killing power. A good shop would of noticed this problem and sold him a bigger $300 backside for his turbo and sent him on his way.

 

I think it would be interesting to have you come down to my new dyno (dyno jet) and see what kind of numbers this set up puts down both on pump gas and race gas - I would be happy to do that free of charge

AL

 

That's funny. A "good shop" would sell him a $300 backside for his $150 turbo.

 

I'd love to check out the new facility once I get back next week. 6 tunes through the 2 years from you, I apreciate the great service and look forward to the great numbers you'll get out of it.

 

By the way congratulations on the new partnership with ICS in Stamford.
I lived there for many 12 years. Just wondering if ICS is right after the railroad tracks on the left of elm when coming from downtown.

Ken

 

Are you serious? The turbo "may" be good for lots of power, but when you sell a turbo kit with the wrong exhaust housing size then its complete garbage, especially when you have to pay 1k just to upgrade to make use out of it. Basically IMHO the turbo kit is garbage. Sell it for the right application or don't sell it at all.

 

I read back a couple of pages where someone stated it was an SSauto turbo. I thought it was a PTE 50trim. Then I agree it was a better idea to move on to a different turbo.

 

"Application" is person and car speciifc. Apex'i, and now Power Enterprises, created the kit for excellent pump gas power on a 2.0L engine. The P20 housing on the TCW77 was a decent compromise of power and spool at anything below 30psi (The wastegate couldn't support more then that anyways). PE actually uses a bigger P22 for those guys looking for more high boost power.

Even a GT35R turbo kit from any of your favorite tuners will have a bigger exhaust side for a 2.4L (.63 to a .82 or bigger T4). Some tuners even use T4 housing on their standard kits. Is one better then another? That comes down to you and your application .

 

That is the place just let me know when you can come by I am very interested to see what that puppy is doing on a Dyno Jet

Your car really impresses me with how quickly the boost comes on between shifts. I think the Gt37 and 2.3 L combo is a very goot fit.

Al

 

I know the combo was wrong for a 2.4. But my point was that Al had tuned both cars to what they could take on pump and one was 18psi and the other was 24psi and my point was that the turbo not being right for the combo could cause the tuning difference since others seem to think that since the boost was not the same the comp is in no way right. I feel it is if he pushed each car to there pump gas potential the test has a point.

 

Also I don't believe # from a turbo that has only been done on one car. So in my mind this Cyber EVO never made over 600whp and is just some FF hype that sound cool.