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      07-05-2012, 11:28 PM   #10
gferil
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Drives: 06 Z4MC
Join Date: Dec 2010
Location: San Francisco, CA

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Quote:
Originally Posted by johanness View Post
I'd go exhaust, because if u think the aFe robbed u of power... The GruppeM will likewise (even tho neither is true).
True, neither aFe or the GruppeM were as smooth as OEM with the RPi scoop. I did a short write up here somewhere in this section of the forum comparing the three, and while the GruppeM didn't exhibit as much loss as the aFe, OEM still felt the smoothest. I did feel like there was a little more punch with the butt dyno at the extreme high end, but you had to be breaking speed limits to feel it.

Plus if you look at my dynos I just posted of stock vs. intake/scoop/exhaust, you'll see that there was a dip right around 3K in power and the power was much less "smooth" with those upgrades, but seemed to gain more above 6K. I'm going to go down to the garage and upload the Evolve tune now though...so we'll see how that goes.
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