Thread: 3 inch DP vs. 4 inch DP for 335i?
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      04-25-2013, 10:47 PM   #17
nsquared
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
We have the 4" Evolution Racewerks Downpipe and its been getting great feedback from customers so far!!

Mike
Can you explain why 3inch is preferred over 4 or vice versa?
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