AMS catback vs. Tomei Expreme catback
Evolving Member
Joined: Apr 2011
Posts: 114
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From: Massachusetts
A high flow cat and a test pipe are not very different, given that the engine is stock or nearly stock. You will observe the difference in exhaust flow, if you have a high boost turbo and rev high.
Sound-wise, I haven't observed any difference between cats and test pipes. I cannot tell whether the car is equipped with a cat or not by just listening to it.
Just my humble two cents.
Thread Starter
Evolving Member
Joined: Jul 2009
Posts: 139
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From: Montreal
The stock cat is a bit restrictive, so you want to get rid of it, if you are looking for better exhaust flow.
A high flow cat and a test pipe are not very different, given that the engine is stock or nearly stock. You will observe the difference in exhaust flow, if you have a high boost turbo and rev high.
Sound-wise, I haven't observed any difference between cats and test pipes. I cannot tell whether the car is equipped with a cat or not by just listening to it.
Just my humble two cents.
A high flow cat and a test pipe are not very different, given that the engine is stock or nearly stock. You will observe the difference in exhaust flow, if you have a high boost turbo and rev high.
Sound-wise, I haven't observed any difference between cats and test pipes. I cannot tell whether the car is equipped with a cat or not by just listening to it.
Just my humble two cents.
One step at a time for me...
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