high flow cat or testpipe
what do you have on your car? if you're not highly modified, i'd go for the high flow cat....less pollution... you won't feel that minimal gain from high flow cat vs testpipe.... that little power isn't worth the pollution IMO
Joined: Nov 2001
Posts: 12,497
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From: Newark/Bay Area, CA., USA
test pipe is better because it doesnt restrict any air flow at all.....but its definately not environmentally friendly, you'll guy high off the fumes at a stop light (especially if your running a chipped ecU), but the gains are nice, the exhaust sounds nice, and yeah....
I saw a dyno once of a test pipe and then a high flow cat on the same ITR. The testpipe gave 2 more peak HP over the cat, but the cat gave 2 more peak tourque over a test pipe. Integra's are in more desparate need of tourque than HP, get a high flow cat. Plus they're good for the environment, you'll feel better about yourself for getting a cat (if you have a conscience).
In my opinion I had a 90 GS Integra and when I installed my header and cat back I also went with a random technology stainless steel unit but after about 2yrs the Random Tech clogged up and melted!!!! So on my next car when I installed my header and cat back on my 95gsr I just hollowed out my stock cat, noticed a minimal gain, didn't have any check engine lights come on and there was no unordinary smell from fumes, so if it was me i'd just hollow the stock unit save some money and kill the environment!!!!
i have a hi-flow on my 01 Ls only thing that sucks about it is being that 96 an higher is OBD2, youll throw a code. you dont have that problem tho.. anyway i like the power gain i got from the whole setup..was worth the money
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<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91jteg »</TD></TR><TR><TD CLASS="quote">did search came up with for sale items
which one is going to give me the most power</TD></TR></TABLE>
Test pipe is going to give you more peak power. Theres pros and cons to a test pipe. Good things is that it flows better, its cheaper, and its simple. Bad things is that it pollutes the environment, it can sound raspy, and it'll be louder. Can't really go wrong with a good high flow cat, so I say go for that unless you're really on a budget.
which one is going to give me the most power</TD></TR></TABLE>
Test pipe is going to give you more peak power. Theres pros and cons to a test pipe. Good things is that it flows better, its cheaper, and its simple. Bad things is that it pollutes the environment, it can sound raspy, and it'll be louder. Can't really go wrong with a good high flow cat, so I say go for that unless you're really on a budget.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LS stretch »</TD></TR><TR><TD CLASS="quote">i have a hi-flow on my 01 Ls only thing that sucks about it is being that 96 an higher is OBD2, youll throw a code. you dont have that problem tho.. anyway i like the power gain i got from the whole setup..was worth the money</TD></TR></TABLE>
is throwing a code on a obd2 teg something to count on once the high flow cat is installed,or after time when the cat breaks down?
is throwing a code on a obd2 teg something to count on once the high flow cat is installed,or after time when the cat breaks down?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LS stretch »</TD></TR><TR><TD CLASS="quote">i have a hi-flow on my 01 Ls only thing that sucks about it is being that 96 an higher is OBD2, youll throw a code. you dont have that problem tho.. anyway i like the power gain i got from the whole setup..was worth the money</TD></TR></TABLE>
code? my hi flow cat's running just fine....
code? my hi flow cat's running just fine....
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by arconist »</TD></TR><TR><TD CLASS="quote">
is throwing a code on a obd2 teg something to count on once the high flow cat is installed,or after time when the cat breaks down?</TD></TR></TABLE>
No. As long as you have the 02 sensor installed, you shouldnt be throwing a code.
Some high flow cats (Carsound) flow almost as many CFMs as a test pipe and actually burn cleaner than a stock cat. Its all up to you...a testpipe is optimal, but its not a huge difference over a good flowing cat.
is throwing a code on a obd2 teg something to count on once the high flow cat is installed,or after time when the cat breaks down?</TD></TR></TABLE>
No. As long as you have the 02 sensor installed, you shouldnt be throwing a code.
Some high flow cats (Carsound) flow almost as many CFMs as a test pipe and actually burn cleaner than a stock cat. Its all up to you...a testpipe is optimal, but its not a huge difference over a good flowing cat.
about a month after gettin the hfc installed i threw a code 67 which is invalid catalyst system. it only reads that cause on OBD2 the O2 sensor reads more air do to the "hi-flow" therefore setting off a trigger and causing the computer to throw a code. i dont no how to get rid of it besides converting to OBD1. if anyone knows it would be greatly appreciated cuz that dam check engine light is real annoying to look at
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iLUVmySH »</TD></TR><TR><TD CLASS="quote">
code? my hi flow cat's running just fine....</TD></TR></TABLE>
Just because there's no CEL, doesn't necessarily mean it's running "fine". I failed smog horribly with my Carsound, even though I had no CEL.
code? my hi flow cat's running just fine....</TD></TR></TABLE>
Just because there's no CEL, doesn't necessarily mean it's running "fine". I failed smog horribly with my Carsound, even though I had no CEL.
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DCSportEJ1Civic
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Jul 16, 2007 12:44 PM





