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      01-18-2010, 11:52 AM   #6
eg3
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Drives: X6 35i
Join Date: Jul 2009
Location: Boston

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Quote:
Originally Posted by audioquest View Post
I have done the Hartge exhaust. I believe the gain is ZERO, but sound nice. I will be running a DYNO on the 29th Jan. But I had also done with ECU remapping. I have to warn you, you will loose the low end. After remapping much better have to tell the tuner that you have the new exhaust system.
You should really read this:
http://www.xbimmers.com/forums/showthread.php?t=341367

You won't lose any "low end" torque on a turbo engine with a proper exhaust.
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