I posted pictures of the Greddy Evo2 install on the Engine/Drivetrain/Forced Induction forum, but I thought I would take out the Dyno part of it, and post it here.

Only difference between the 2 runs was the GReddy Exhaust (both have the test pipes w/ res)
If you can make it out, this makes loads more HP and Torque at lower end much faster!
(not concerned with the top end lost, we can fix that, and smooth it out all the way up.)

At 3560 RPM's the
Torque was 30 More!
213
vs
243

HP was 40 More!
300
vs
340

 

Guess it is also important to meantion the boost didn't go up as high with the GReddy Exhaust on.
Went to I belive 6.2, other run with stock exhaust went to 6.6

Due to the higher flow exhaust, less pressure, I guess they will do that.

 

that's alot more area under the curve. enjoy it!!

 

are you running 6-6.6psi with a boost controller? Or was that just with the standard wastegate?

 

Am I missing something??????

At 3,560RPM i am at 267RWTRQ with 2.3lbs of boost

I know i am missing something.

 

That was peak psi (as read out on the e-01 as it saves the highest in the run)

I have not touched boost yet.

 

Yes your missing horsepower down low with the SC

 

You are missing the TT effect, the TT's will build boost much quicker than the SC, the SC might have a lot of HP but will no reach until 6K while the TT will spool up faster.

After seeing the two curves I am definetly saving my extra pennies to get the TT instead of the SC.

 

will this exhaust do good with high flow cats on a N\A Z? I am looking for good gains with that

 

It's sounds great on my car with RT cats. This exhuast is designed to meet 95db sound requirements, so it's only a tad louder than stock, but it's a much deeper, yet smoother sound...hard to explain. If you want a loud exhuast, look elsewhere. But honestly, the performance gains are probably comparable to most exhuasts out there.

 

Uhm, westpak & ACP... I hope you know that fluidz said he makes MORE torque at that same RPM (267 > 243) than ACP did... not less.

 

By the way, I'm really curious how this exhaust compares to my Borla True-Dual for FI applications... think the gap will be that big ?

 

He asked what he was missing, I told him
he was missing horsepower down low (light hearted comment)

At same RPM 3600 HP comparison
340 > 183

 

I don't know maybe I am missing something or he is comparing his torque curve to ACP's HP curve??

I printed both charts for my own education and as I see it it looks like this

@ 3800 rpm
SC=274 tq & 200 HP
TT=340 tq & 245 HP

@ 4500 rpm
SC=295 tq & 242 HP
TT=335 tq & 285 hp

@ 5000 rpm
SC=287 tq & 280 HP
TT=335 tq & 320 HP

@ 5500 rpm
SC=273 tq & 297 HP
TT=320 tq & 335 HP

@ 6000 rpm
SC=266 tq & 310 HP
TT=300 tq & 340 HP

Now before anyone critiques the numbers they are estimates looking at the charts.

Also by the curves the TT reaches peak tq sooner than the SC. If I am wrong let me know, I am not saying I am perfect and I might be making a mistake reading the charts. My assumption was that the torque curves are the ones that are almost straight across trailing off towards the top of the rpm range and the HP curve the one that rises constantly peaking close to max rpm.