Thread: Exhaust
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Old 11-09-2012, 12:11 PM   #22
Gasman208
Registered User
 
Join Date: Nov 2012
Location: Ottawa Canada
Posts: 12
My Ride: 325 Xi, 128 coupe
They sound the way I wanted, smooth, lower toned, like a sports sedan.
a nice growl with rapid acceleration, reassuring background hum when cruising, no rasp or drone.
it's not easy to say if performance is improved, I have no way to measure it, But it feel better. Economy is improoved (even though I might be using it harder) by about 6% on the 128. Not had time to evaluate the 2004 325Xi economy yet.
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