Thread: Must Do Mods
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      06-10-2013, 08:53 AM   #11
N0Chill 335i
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Drives: 13' F30 335i M Sport AW
Join Date: Nov 2011
Location: MD

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Quote:
Originally Posted by Mayuri Krab View Post
I believe it is one of the plug in ECU tunes you can buy.

Also are the stock exhaust very restrictive from factory?

This is my 1st BMW (Euro Car), so I'm not very familar with them, but with my old R33 it had a pea-size stock exhuast & replacing that with an aftermarket 3" TBE gave noticable increase in power & response.
Comes with a true dual exhaust from the factory. Change your cats to Down Pipes and do a secondary cat delete if you want performance benefits. Just changing out the exhaust doesn't really do much for these cars.
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