Just thought I'd update this thread, got the dragy GPS box mounted in the car and after I drain this tank of e85 I'm going to put in a quarter tank of 91 octane and do a 40-100/60-100 multiple times and then drain the tank and do the same thing with a quarter tank of e85. Each run I will allow the car to cool for 2 minutes by driving normal then repeat it again. And of course I will film the whole thing and make another video! Results will be posted in a few days!
http://www.burgertuning.com/dragy_gp...nce_meter.html
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2006 Z4 M Roadster Black/Imola Red, FBO VF-Engineering, e85 Flex Fuel-Sold
2012 BMW 135i N55 DCT Alpine White/Coral Red, FBO, TBI, Full e85, JB4 BEF-Sold
2006 Z4 M Roadster Black/Black-Sold
2021 M2 Competition DCT Hockenheim Silver