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Im getting my greddy evo 2 catback installed soon and was thinking of buying a hi flow cat aswell. I just wanna know if the hi flow cat is worth it, can I expect any advantages from a hi flow cat or should I just keep the stock cat on? Ive been told that a hi flow cat will cause the note of the exhaust to be a little higher, is this true?
 

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I have had the magnaflow high flow cat on my car for almost a year now, and I didn't really notice a difference from what was on there before. But what was on there before was a test pipe! Also because it does flow a little more through it than a stock cat, my check engine light does come on as a result of it.
 

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BB6'n till R34'n
Joined
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6,093 Posts
I have had the magnaflow high flow cat on my car for almost a year now, and I didn't really notice a difference from what was on there before. But what was on there before was a test pipe! Also because it does flow a little more through it than a stock cat, my check engine light does come on as a result of it.
BLOX 02 CEL Eliminator - JHPUSA
or
Two spark plug anti foulers from any auto parts store.
 

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thanks solid, just what i needed, my CEL just keeps on pissing me off, finally :) got it BLOX 02 cel, checked on the site that it works with h series engines, i got a 01 prelude so im pretty sure it'll work.

thx
 

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I have had the magnaflow high flow cat on my car for almost a year now, and I didn't really notice a difference from what was on there before. But what was on there before was a test pipe! Also because it does flow a little more through it than a stock cat, my check engine light does come on as a result of it.
why get rid of the test pipe?? smell? torque loss? cuz i want my ****ing car to be loudr i have the greddy evo 2 too.. and it sounds deep and nice.. but i just wanted a little louder.. i wish the high flow cat would make just a little bit more diference than "barely louder from stock"
 
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