i have a 1992 gsr with AEM CAI, Tsudo Headers, and flowmaster #60 muffler.

If I take out the catalytic converter and put a straight pipe there, how much HP gain?

noticeable difference? worth doing it?

I need every extra HP I can get. Im racing my friends 2001 Prelude w/ AEM CAI, and he's talking so much **** that he's gonna win and how the gsr is slow.. well i want to really make sure I win.. even if its not by much.. i just need to WIN!!!

HELP ME..

 

1-2 hp maybe... if any at all. (maybe even lose power from lack of back pressure?) Not worth the $$ nor the minimal power gain (if any) by blowing funk into the atmosphere. And you won't even feel it. If you were turbo'd than yes, you'd feel a difference with a test pipe. Otherwise, no.

secondly... tell your friend to shove it since he feels he has to compensate for his own short comings by raggin' on your car. And if you do race him, go to a track. That way all conditions will be equal and you won't kill anyone.

 

that whats we are gonna do.. friday night at the track.. i dont want any exscues.. and ya.. he's ragging on my car cause him and his cousin are scared.. and they both have the same prelude.. ****.. couldnt think for themselves.

 

Running a straight pipe should add HP.

 

A GSR should beat a base Prelude on the track. Now the SH, that may be a different story .

 

Get a cheater NOS system! hehe! j/k!

Good luck! Just practice your launches and bust him out!! Maybe do a quick tune up with fresh spark plugs and oil change and stuff if you haven't in a while.

And maybe remove the backseat and stuff to lighten it up some more. (the ludes are heavier vehicles in general) Also, lower your front tire pressures (be sure to bring a pump to pump the air back up before cruising back home...) to about 20-25psi for more grip on the lauch.

Good luck!

 

good luck, more power to the gsr. I dont know if that SH comment was sarcastic or not, but if not... its no faster... it actually may be slower. The only real difference between the two is the active torque transfer system... and that weighs like 60 extra lbs. Anyway, ***** to the prelude kid

 

I had a straight pipe on my teg for about 2 days before i got a high flow cat. The test pipe made my car sound horrible and it smelled really bad too. I didnt notice much difference between the two HP wise though.

 

Removing the cat is just a bad idea. A new high-flow cat will do just as well. Like the above post mentioned, you will only gain 1-3 HP, but screw up the Earth, which isn't a good idea. A clogged cat will restrict performance, but in the schemes of thing, pulling your interior and tuning up your car will do more.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92integraVTECgsr &raquo;</TD></TR><TR><TD CLASS="quote">i have a 1992 gsr with AEM CAI, Tsudo Headers, and flowmaster #60 muffler.

If I take out the catalytic converter and put a straight pipe there, how much HP gain?

noticeable difference? worth doing it?

I need every extra HP I can get. Im racing my friends 2001 Prelude w/ AEM CAI, and he's talking so much **** that he's gonna win and how the gsr is slow.. well i want to really make sure I win.. even if its not by much.. i just need to WIN!!!

HELP ME..</TD></TR></TABLE>

i swear guys, not everyone is like this from Tennessee....

 

ive read a dyno graph showing a 90 integra ls gaining 5 wheel hp just by replacing the cat with a test pipe, nothing else.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by benb18a &raquo;</TD></TR><TR><TD CLASS="quote">ive read a dyno graph showing a 90 integra ls gaining 5 wheel hp just by replacing the cat with a test pipe, nothing else.</TD></TR></TABLE>

exactly. so why take out the cat converter and make ur integra sound like a pissed off bumble bee? you are not going to feel 5 hp while all ur doing is polluting the atmos. and annoying people. just learn how to drive

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 99whitejizzer &raquo;</TD></TR><TR><TD CLASS="quote">

exactly. so why take out the cat converter and make ur integra sound like a pissed off bumble bee? you are not going to feel 5 hp while all ur doing is polluting the atmos. and annoying people. just learn how to drive </TD></TR></TABLE>

yeah my friend had a test pipe on his civic, with a magnaflow exhaust that thing is WAY to loud... and the preludes i encountered in my gsr were no match

 

i mean for real i have a 95 gsr now with intake, exhaust, fuel rail, act 4 puck disc, act prolite fly and i can pull a prelude (vtec) by about a car and a half and thats not me straight up ragging mine out. never have raced the si though

 

you should be able to walk all over an si. despite having a slightly bigger displacement than the h22 vtec, they have about the same amount of torque, but 30 less hp.

 

oh well its still just a prelude......don't be a ***** race him and one of two things are going to happen. one ur going to beat him or two ur going to lose

 

A good driver alone would help in a race too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by apok &raquo;</TD></TR><TR><TD CLASS="quote">A GSR should beat a base Prelude on the track. Now the SH, that may be a different story .</TD></TR></TABLE>

Umm no. Car for Car a GSR will not beat a H22 prelude. Straight line and definetly on a course.

SH? Whats the difference? It comes with ATTS, which isnt a good thing if you talk to prelude owners.

 

weve got a prelude lover in the house hehe... It all depends on the drivers and the cars current condition. I LOVE MY TEG BIATCH

 

Actually I havent drove my Gsr with a cat to find a difference. But my Ls had 180k on it and when I put the hi flow on it felt like a new car and top end was so much better. I was strugglin to get over 85mph and when I put the hi flow on I hit 110 like it was cake cruisin around within 3 1/4s of the time it took to hit 85. My car I admit is pretty loud. The only reason I like it is cuz I have a ricer sound so people pull up in Srt4s and camaros and their like what a loud POS. Then 2 sec later they cant catch up with me lol. With prior experience I seen a hi-flow cat can be good or not. I guess it depends how bad your stock cat is. Mine must have been really clogged. I failed inspection for a high NOX like really high. I guess a hi-flow cat couldnt hurt.

One more thing Gsr cant beat Sh? All your doing is racing a 3k lb boat. Ive takin a Sh before and I got a Ls tranny. Im sure you can if you gotta Shortgeard tranny. Good Luck

 

i beat a sh in my gsr by 2 car lengths. all i have done to it right now is aem comp intake, apexi dunk exhaust, aem fuel rail, act 4 puck and prolite fly and i beat the sh that had intake header exhaust and clutch (stock fly) but i still beat him by 2 from a 15mph roll to the end of 4th

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by benb18a &raquo;</TD></TR><TR><TD CLASS="quote">ive read a dyno graph showing a 90 integra ls gaining 5 wheel hp just by replacing the cat with a test pipe, nothing else.</TD></TR></TABLE>

Can we see it?

 

my first swap i did i put a test pipe on because i didnt have a cat at the time....sounded so bad made me not want to drive it...just get a highflow cat u will be alot more pleased with that

 

also that isn't godo at all for ur valves running no cat on NA. makes them a lot mroe vonerable(sp?) to floating one

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Danziver &raquo;</TD></TR><TR><TD CLASS="quote">I had a straight pipe on my teg for about 2 days before i got a high flow cat. The test pipe made my car sound horrible and it smelled really bad too. I didnt notice much difference between the two HP wise though.</TD></TR></TABLE>

this is an open question, but to people who say test pipe's smell, did you ever think it was the install and not the testpipe?

also, if you put a resonator in the place of the cat, the sound difference is negligable.