Test pipes or high flow cats
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Test pipes or high flow cats
Hey guys,
I got a g35 coupe 6mt. Just curious to know which is better to go with..test pipes or high flow cats. I dont really like the raspy noise from the testpipes. Does the resonated ones prevent it or no? Also which brand of high flow cats are good and produce the highest dyno gains? Please tell me any suggestions.. Thanks!
I got a g35 coupe 6mt. Just curious to know which is better to go with..test pipes or high flow cats. I dont really like the raspy noise from the testpipes. Does the resonated ones prevent it or no? Also which brand of high flow cats are good and produce the highest dyno gains? Please tell me any suggestions.. Thanks!
high flow cats. fast intentions or crawfordz.
but if you dont mind the smell of unburnt gas...
the test pipe route would be cheaper, go with fast intentions resonated test pipes.
as far as the difference in gains, it's not going to be a night/day difference between the two.
but if you dont mind the smell of unburnt gas...
the test pipe route would be cheaper, go with fast intentions resonated test pipes.
as far as the difference in gains, it's not going to be a night/day difference between the two.
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Joined: Dec 2006
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From: Fort Walton Beach, FL
SportCompact did a test, between HFC and Test Pipes you will only see about 1hp difference. however sound will be very different. You will have a lot more backfire/detonation with testpipes as the gas will cook off later in the exhaust instead of the cats burning it
search for hero's review on the FI high flow cats... i just read it right now and i'm pretty much sold on it 
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Originally Posted by ac419
search for hero's review on the FI high flow cats... i just read it right now and i'm pretty much sold on it
haha my bad.. here you go hero's review.. https://g35driver.com/forums/showthr...light=cell+300
and FI's post.. https://g35driver.com/forums/showthr...ast+intentions
and FI's post.. https://g35driver.com/forums/showthr...ast+intentions
Originally Posted by ac419
haha my bad.. here you go hero's review.. https://g35driver.com/forums/showthr...light=cell+300
and FI's post.. https://g35driver.com/forums/showthr...ast+intentions
and FI's post.. https://g35driver.com/forums/showthr...ast+intentions
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Joined: May 2006
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From: Gaithersburg
Originally Posted by aHero4Eternity
high flow cats. fast intentions or crawfordz.
but if you dont mind the smell of unburnt gas...
the test pipe route would be cheaper, go with fast intentions resonated test pipes.
as far as the difference in gains, it's not going to be a night/day difference between the two.
but if you dont mind the smell of unburnt gas...
the test pipe route would be cheaper, go with fast intentions resonated test pipes.
as far as the difference in gains, it's not going to be a night/day difference between the two.
Originally Posted by b00stedjustin
Like hero said, but I would still pay extra for HFC so that you remain legal. Test pipes are not legal in any state.
Originally Posted by dubs
True but if you don't throw a cell light then it will pass inspection in NY...not sure how it all works in other states.
but you can prevent the cel on the 03.5's and above with the non fouler mod.