Got 280rwhp 183 tq. I have a UR kit with a Spugen dual titanium exhaust and AEM EMS. The tuner guy thought that maybe the 2.5" exhaust was restricting me, not to mention the stock cat. So I guess I need a J's 70rr. Damn .
Also saw a 731hp turbo b18 hatchback and a 1000hp(potentially) Supra with a T-88H I think. He put down 740.
My Dyno graph:





Just kidding. That was me running on the dyno. I told the guy I needed a little headwork. Ha!
My real graph w/perfect a/f:

This is how you prevent tire-slippage on a 730 hp civic :


Whaddya think about the exhaust?

 

why red x's?? And I have videos of both the civic and the supra and my car. How do I upload them?

 

Oh yea. And he set the VTEC to 6000 because it was dipping at 5600

 

Anybody? Help me with my exhaust question please

 

I've run the most serious restriction (factory exhaust) while making significantly greater power. A larger exhaust might release a few ponys but don't be supprised if it's less that you want.

 

Turbo is quite a bit different than SC when it comes to exhaust Sideways. Plus, your car is a freak anyways.

UL

 

UR makes 3" exhausts there is 4 differents models to choose with a price range from $625 to $1350

They also makes 3" downpipe and 3" cat


http://www.ultimate-racing.com/Products2/S...K_Exhaust.shtml



Juan

 

OK, I'm sitting here and all I can do is shake my head. Yes, exhasut size helps a turbo spool higher and faster...but it doesn't make it give you more power. Now I'm not saying that a larger piping will not help the performace of the car, but what I am saying is that if you are not getting the numbers out of a turbo kit that you think you should...the exhaust isn't the first place to look. I mean you are only putting out what 7-8psi? Do you really think that a 3 inch exhaust is going to make that big of a differance? Not really. When you start talking about 15-20 psi, then yes, a 3" exhaust over a 2.5 will make a differance, but most of that will be in the time it takes to spool.

 

My buddy with a SOHC B16 @ 8psi gained 20 whp just by switching to a 3" exhaust. We removed the filter on my dyno run and it didnt change the power. It was 90 degrees and humid as hell but that's not enough to make that much of a difference. Regardless, with 280 whp this car is greasy fast. I love it. No complaints at all, just wonsdering how Ultimate Racing got 319 with an Emanage and Im running EMS.

 

Scorpion,
the turbo cannot even get to 7 psi because the engine can only take in as much air as it can expel. Therefore the 2.5" exhaust is decreasing my power because the turbi cant get past 5.5psi.