Well I done the 'golf tee' mod this sarvo and yup it makes an immediate different under normal 1st gear acceleration it 'wails' and under deceleration there is now a lot more crackle n pop action happening!
http://www.e90post.com/forums/showthread.php?t=80661
It's hard to imagine the N54 sounding much better then it already is now, I ran out of sunlight to stick my head under the car to confirm if I have the BMW PE already (I cant believe the oem mufflers sound this good!)
I really cannot justify a PE costing $1-3k, and especially when the akra has a dyno chart like this:
[img]http://www.**********s.com/images/Products/akropovic/akrapovic-e9x-335i-exhaust-dyno-1.jpg[/img]
For the HP gains made a $100 DCI kit would produce similar gains I'm sure, providing much greater BFYB!
A few small mods arrived in the mail today that I might get around to installing this long w/e!
Foliatec top strip windscreen visor:
http://www.foliatec.com/foliatec/sho...425&groupId=74
BMS clutch stop:
http://www.burgertuning.com/clutch_stop_BMW.html