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      06-08-2009, 06:32 PM   #71
dogears
My master volume goes to 11
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Drives: 2021 BMW M5 Competition
Join Date: Dec 2008
Location: Cherry Hill, NJ

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I replaced my primaries with the high flow. Trust me, it is much deeper. My car sounded like "X" when it arrived at Fabspeed. When I picked it up with the high flow cats, X-Pipe and resonators, it was way deeper. Like "2X". Jeremy even revved it and pointed out just how much louder it was. The stock primary cats are a big restriction. Anything you remove from the stock setup will increase volume. Some things more than other things.

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Originally Posted by powertrip View Post
Crazy talk is thinking that your setup sounds the same as mine. I have no resonators and stock primary cats....signicantly deeper?? I think not .
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1987 Buick Grand National, 2009 BMW E90 M3, 2016 Audi S6, 2018 MB E63S AMG, currently in 2021 M5 Competition
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