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Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications
Steve Thomas BMW
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      11-22-2010, 11:17 AM   #23
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Drives: E90 2008 M3 silverstone
Join Date: Nov 2009
Location: miami, fl

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Sorry to burst your bubble alf
But exhaust is going to be a sound modifacation vs a hp gaining mod!
You don't feel shiat when it comes to changing a muffler on any car.
Now if you change the x pipe with a ecru tune then one might feel a little improvement.
I personally have the full AA system with ecru tune and it sounds like a lambo
I mean I love my exhauste tone almost high pitch like a Italian sports car
Good luck
AA signature w/ xpipe AA ecu, alufelgen 19''s kumho, h&r sport, afe element & scoops, ind painted markers, and gills, carbon grille.
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      11-22-2010, 01:51 PM   #24
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Drives: 2009 M3 E92
Join Date: Oct 2010
Location: Mansfield, NJ

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You will not feel or see much more than 5 - 10 hp out of a rear section exhaust. Its for sound mod only. Removing or switching to HFC (primary) and ECU tune gives you noticeable power increases.
E92 M3 DCT...Powered by ESS VT2 650/DCT GTS Software/Aquamist HFS-3 50/50/Morr /Toyo R888's

ATCO RACEWAY: 10.65 @ 131.79MPH 1.725 60FT
(Stock ESS 625)
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