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      12-27-2012, 12:31 PM   #6
M3 Driver
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Drives: 2015 ///M3 Black/Black
Join Date: Oct 2011
Location: Dallas, TX

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2015 BMW M3  [0.00]
Originally Posted by I35it View Post
I would assume its for the lack of wastegate control with no cats where you could over boost. I tune Mazdaspeeds and I know that if you don't run the right maps with them the car loves to overboost and just run havoc. But theres a shit load of other reasons not to run the carless without the map because of fuel issues, timing, and shit whatever else.
Yes, overboost was the reason they mentioned when I was up at Cobb picking up the AP.
2015 M3 // Black Sapphire Metallic / Black Extended Merino Leather / Carbon Fiber Trim / Executive Package / M Double-Clutch Transmission w/ Drivelogic / 19" Black Light-Alloy Wheels / Adaptive M Suspension / Harman Kardon surround sound
Other // Shell Rotella T6 5w40