Hey guys,

I have a 1995 Acura Integra LS sedan. My stock cat heat shield is rattling and my midpipe is rusted out and the tip is flaking, so I've decided to go ahead and spend the money on a new exhaust. What kind of gains am I looking at from all stock to an Iceman CAI, Comptech 4-2-1 Header, Carsound Catalytic Converter, and Comptech Power-Pro Catback Exhaust?

Thanks,
Ben

 

Roughly 15 - 20whp

 

Are you out of your mind?

Maybe 10 horsepower, if that.

 

Nope, I/H/E.. in general.. gives roughly 10 - 15whp.

Now that is with the stock bottlenecked cat, which is going to hinder the gains of the exhaust and header. (Going from 2" header collect, to stock 2" cat inlet, then from the 1.8" cat outlet to a 2.25" or larger exhaust. Not to mention the stock cat flows awful to begin with).

With an unplugged cat your looking at another 2 - 5whp.

i/h/c/e B18B's generally have 135 - 140 whp. Stock they generally have 120whp.

This is all estimation, but its averages from dyno's I have seen.

EDIT: Maybe you didn't read his question all the way? He is not looking for just the exhaust, but the gains from stock to I/H/C/E (using quality parts as well)


[Modified by StyleTEG, 10:28 PM 8/9/2002]

 

You guys believe the dyno that comptech posts for the GSR with there I/H/E?The chart claims 19 PKWHP.

 

Remember, I'm talking I/H/C/E. You guys don't think I would improve by 20 whp? If not, what other simple mods could I do to make my 20 whp "boost target"?

Is this exhaust going to hurt my gas mileage? Just wondering.

Thanks,
Ben

 

**** my turbo only adds like 20 whp......... hehe :D

 

I used to have I/H/E (DC DAC, Greddy 4-2-1, Thermal R&D), and it sure as hell didn't feel like I had 20whp more. Then again, what does my butt dyno know?

 

exhaust will give you probably 3whp.

 

You're kidding, right?

Ben

 

A catback by itself is not going to give much gain over stock, because there are still other large bottlenecks in the system.

I/H/E still has a bottleneck, the cat, and its right inbetween the exhaust and the header so it is going to effect the gains of both. That is why you probably didn't feel many gains from your i/h/e setup.

Roughtly 15 - 20whp, I think you would be pretty lucky to see 20whp from it.. closer to 15 - 17whp on average. If you want to stay allmotor, then usually the next step is cams and cam gears.

 

StyleTEG, you seem to be the only one advocating such a high HP gain, but you make a damn fine convincing argument. Thanks for all your input!

Ben

 

Take a look at this dyno (sorry about the large size)



As you can see from just header and exhaust, there was a gain of 12whp. That is with out a cat and intake.

Just so you know I am not pulling figures out of the air. Its hard to make a good estimate when it comes to modifications and HP results, because every engine is different and will respond to modifications differently. 15whp is a general estimate for i/h/e (again, with out the cat).

 

False advertisements......

 

Okay, the header is one thing. i agree it will add 7-12whp. Just look at the great header test completed in the type r forum.

But, as for exhaust... with the LS's major restriction being in it's head and intake manifold... freeing up power with the exhaust proves to be more difficult. A type r, which has a bottle neck 2" exhaust (hell I run it), gained something like 3 or 4whp with the addition of a well crafted custom smsp exhaust.

I highly doubt, and would put money against any exhaust on a stock LS, or an LS with intake and a header, gaining more than 4whp. This is after reading dynos of integras for the last two years online... exhaust helps when your motor becomes more breath happy, but in the basic levels of bolt ons and stock cams, its just for noise.

 

 

http://www.comptechusa.com/images/dy...sr_ice_box.pdf
How about this dyno with a GSR I/H/E 19WHP?Think its BS?


[Modified by maggsgsr, 3:20 AM 8/11/2002]

 

you guys are all too gullable (sp.).

I/H/E will NOT give you 20wHP even on a Vtec motor. That is pure BS. A stock LS, with Intake, header, and exhaust getting it Dyno'd and get 20wHP from it? hahaha... thas pretty funny.

 

like i'm going to believe a comptech dyno graph of the icebox

 

Just get some altezzas and you are sure to go faster

 

altezzas dont make your car faster the lighted windshield washer lights do.

 

Ok, here's what I know, I hate VTEC, pure LS all the way, b-4 I blew my stock motor, I had a DAC, DC 4-2-1 header, 2" test pipe in place of the cat, stock exhaust all the way back to an N-1 muffler, and I ran 15.4 in the quarter, with an 95 LS integra, mostly gutted, weighing 2675 with me in it. Everyone I know with a stock LS, or even an LS with intake and muffler, could barely get 16.0 . So take it for what you want, that's just my experience.

 

heh... those are some generic gains...

 

Why would you hate VTEC? How is your LS any better than a gsr? I mean, you didn't go any faster than a gsr, you didn't make more power with your mods, all you claim to have done was run faster than other LS's with similar mods, but then again, they're not running test pipes or gutted interior. In fact, with your intake and headers, gutted interior, and test pipe, you ran just about what a stock GSR would do. You sure you're having VTEC for dinner?

 

Ok onebadLS, or one retarted idiot. whatever you prefer. Yeah great job on the 15.4, but you spent a decent amount of $$$ on your mods, plus u have no interior, so my car not only looks better than yours, but its faster. oh yeah and its stock. So basically how much Vtec do you eat, hell you must be starving over there.