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      08-30-2012, 11:27 AM   #6104
benzy89
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Drives: '08 E90 335i
Join Date: Jan 2012
Location: Northern NJ

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2008 BMW 335i  [7.50]
Quote:
Originally Posted by Manny_World View Post
Here's my situation. I'm moving west where there's no 93 octane gasoline, but 85 ethanol. My question is, will it be safe to still run my aggressive map with maybe 91/85 mix or should I suck it up and run my drive map? Thanks in advance.
Use this E85 Octane Calculator (http://www.intercepteft.com/calc.html), scroll to the Octane Result from Blending 2 Fuels calculator & aim for 94 Octane. Your "home made" 94 gas should allow you to run the Aggressive Map without having any problems. Log It to make sure the car's running happy.

Quote:
Originally Posted by Ænema View Post
Yep, that'll work. In fact, a custom map of 91+e85 will make heaps more power than the aggressive maps. I suggest talking to jake@protuningfreaks
+1 for ProTune by PTF, Jake's been able to work wonders by building both a custom Pump Gas Map & an E85 Blend Map
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