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      05-09-2010, 11:31 PM   #23
C'sM3
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Drives: 2016 328i xdrive wagon
Join Date: Feb 2010
Location: Charlotte, NC

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Quote:
Originally Posted by Subw00er View Post
Cool. Glad more people are doing cutouts. Its a awesome mod. A lot of work though!

I used race ready cutouts. I wouldnt recommend them. When it gets to be 40deg F they literally stop working. The company is unsupportive so fu RRP!

Anyway, cutouts will give a little (5-10hp) HP but you will lose about the same amount of torque. I know this because I dyno'ed my car in both configs. I would guess that the closer you got to the headers, the more HP you'd gain and torque you'd lose, but thats just a guess. Either way, I cant feel the difference when they are open or closed.

BTW, do you get drone at around 3000 rpm? I'd think this config would drone a little bit.
Yes I do get some drone at 3000 rpm. Since I installed the AA X-pipe with HFc's it's really loud. Don't get me wrong, I can't stop smiling when I run up to 8000rpm with the valves open, but people around you will either be pissed off, calling the cops, or smilling ear to ear and giving you the thumbs up I wouldn't go on a trip down the highway with the valves open but that's what's so awesome about the set up. Whenever I want to be loud and obnoxious I can be and whenever I want to be incogneeto I can be
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