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      02-13-2013, 01:42 AM   #123
nsquared's Avatar

Drives: (S)LOW.
Join Date: Jun 2011
Location: California & Utah

iTrader: (2)

Originally Posted by citystarshazard View Post
I purchased my challenge catless DP about 2 weeks ago. It took a couple days for my CEL to come on. Sounds awesome and gets slightly noticeable more power. I am at the time running stock exhaust though waiting on the challenge exhaust. Best 500 I've put into my car so far. Fitment was flawless, nothing but compliments on the sound even though the stock exhaust is rather restricting. I unplugged the exhaust valve while doing this install too so that both tips are always open (you must unplug after the valve is already open). Will post sound clips soon
Nice review. What kind of noticeable power?

Hurry on the video? Also is the increase in sound in all 3 modes ECO/Comfort and Sport and Sport being the loudest or?
'13 AW F30 335i ///M-Sport 6MT. OEM(+) - SOLD