Test pipe or High flow cat?
May 30, 2006, 11:25 AM
#1
Test pipe or High flow cat?
I have a RMR downpipe and exhaust. But the downpipe uses the stock cat. I would much rather get a test pipe but this is my daily driver and I am worried about not passing emissions. Are the power gains that much better in a test pipe than a High flow cat. Do they even check for the cat anymore?
May 30, 2006, 12:15 PM
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yes if you have emissions testing they do look for a cat atleast for me they do in PA, not sure on MD laws......but you can always swap back and forth, its only once a year
test pipe will yield a couple extra ponies over a highflow, imo not worth the hassle of swaping back and forth or defying emissions, but thats just my $.02
test pipe will yield a couple extra ponies over a highflow, imo not worth the hassle of swaping back and forth or defying emissions, but thats just my $.02
May 30, 2006, 02:58 PM
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Originally Posted by kreionic
I have a RMR downpipe and exhaust. But the downpipe uses the stock cat. I would much rather get a test pipe but this is my daily driver and I am worried about not passing emissions. Are the power gains that much better in a test pipe than a High flow cat. Do they even check for the cat anymore?
May 30, 2006, 03:01 PM
#7
Originally Posted by AC556k
Well, I will tell you from absolute first hand experience. I have a Greddy Evo catback, Turbo XS down pipe and had a UR hf cat on . The gain's were good with the HFC, but I had the UR test pipe put on this weekend. What a huge difference, the power is really felt. The car actually seems to run a hell of a lot better. No CEL's or check engine lights either.
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May 30, 2006, 03:01 PM
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Originally Posted by trinydex
no keep the air clean for yourself... running a test pipe will make you nauzeated. every time you come to a stop if you have the windows down your exhaust will catch up to you. happy breathing :\
we don't live in cali where you don't get very much wind. 
May 30, 2006, 06:04 PM
#11
Originally Posted by trinydex
no keep the air clean for yourself... running a test pipe will make you nauzeated. every time you come to a stop if you have the windows down your exhaust will catch up to you. happy breathing :\
May 30, 2006, 06:11 PM
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I had the UR HFC and i also have a test pipe. Big difference with test pipe and also louder exhaust. When it comes time for emision tests then i will swap back to the HFC.
May 30, 2006, 06:12 PM
#13
I had a magnaflow high flow cat and put down 320 to the wheels. A week later I swapped out the hfc for the buschur cat delete pipe and ran 332. 
I think 12 horse to the wheels is worth the hassle of swapping out the part if needed for emissions testing.
Just my two cents.
I think 12 horse to the wheels is worth the hassle of swapping out the part if needed for emissions testing.Just my two cents.
