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      11-20-2012, 12:40 PM   #7
radiantm3
Apex Everything!
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Drives: >1000 HP in my garage
Join Date: Sep 2008
Location: Danville, CA

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Garage List
2011 E92 M3  [4.80]
2013 BMW X5M  [4.33]
2014 BMW i3  [0.00]
I'd make sure you do a few test drives before you make the jump. I made the jump from a 135i as well and to be honest the M3 "felt" slower than my Dinan-tuned 135i. In reality I they were really close in straight-line performance. Torque is deceptive. If you just want the car to go/feel faster, I'd just go with a tune. Go with Dinan if you are worried about warranty issues. I'm pretty positive you'll be extremely happy with the power.