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      11-12-2012, 01:05 PM   #89
GTM_Challenge
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Drives: E92 M3,X5M,F30 335
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Quote:
Originally Posted by mikew2069 View Post
What kind of noise can I expect inside the car with the HFC DP and sport exhaust? I really want to wait for rear diffuser/quad outlet but I'm impatient so who knows.
At wide open throttle its going to have more noise of course and any drone is pretty close to stock levels at lower RPM at higher engine load or cruising speeds. We daily drove this car for a few months to test it in all conditions including hwy driving.