Thread: BMS vs. VRSF
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      11-21-2012, 09:33 AM   #20
Stohlen
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Drives: AW 135i
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2008 BMW 135i  [2.83]
Quote:
Originally Posted by DRedman45 View Post
Having a true 3" would being harder to sell, you would need 3" mids or after the dps you would have a bottleneck at the flange where it meets the mids...AR does look to have the smoothest tapper to 2.5"
True but if you made both it would be so easy to sell. There is a need for a full 3" system to the Y pipe with a 3.5" single pipe for anyone who is really serious about higher horsepower systems (500+ whp), because that restriction is gonna become more and more prevalent the higher you go and its gonna start choking things on the top end.

I never understood why anyone makes exhaust pipes that taper, including oems... it just messes up airflow and velocity and causes havoc in the system. In these days where we are fighting for every horsepower when building a production engine, that would be a real simple way to add a few without adding cost to the process.
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