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Old 07-26-2012, 07:53 AM
mermar mermar is offline
Officially Welcomed to the 'Fest
Location: Minnesota
Join Date: Apr 2010
Posts: 117
Mein Auto: 535xi
Originally Posted by burnie35 View Post
I've been running Cobb AccessPORT on my 535i Sport for a couple of weeks. Installed Stage 1 Sport Stock Throttle v401 about a week ago, and love it. It makes the car feel smooth as silk ... smooth acceleration and shifting. Even my wife loves it ... although she always is a bit nervous that I'm going to screw up our bimmer.

Today installed Stage 1 Aggressive Stock Throttle v401, and was taken aback by the extra power. Drove around for a while and decided to put it back to Stage 1 Sport, because it felt more "daily drivable", while Agressive didn't seem quite as smooth. Of course, when I'm in the mood I'll change it back to Aggressive.

Running 93 octane here, so even Drive and Sport modes kick butt ... while Agressive kicks a$$.

For the heck of it, I made some quick runs while monitoring the boost. They were run in regular automatic Drive, and all I did was hit the throttle to "passing gear" (as we used to call it). RPM went to about 6k each time. Boost for Stage 1 Drive maxed at 14.4 psi, while the Aggressive maxed an 17.1 psi. (That's another reason I went back to Sport. I felt that there's no need to work the turbo's too hard on a day-to-day basis ... just my feeling).
Thanks for the great write-up. I am exactly like you - want a healthy bump - but not at the expense of over stressing the sweet in-line 6 we have. Im planning to order my cobb in a few weeks. It has been so hot here I thought it would be better with cooler ambient temps while I install and 'learn' my new Cobb tune. Also, I think Cobb was on the verge of going to a new version for the N54 - as it had been in beta for a while. I too use 93 octane. You mention it is very smooth - is it also noticeably quicker in sport setting?
09 535xi Sport, AT, Staggered Michelin Super Sports, purely stock now, Passport 9500ix
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