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      10-28-2021, 01:40 AM   #28
johnung
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Drives: 2015 BMW 335i x-Drive Auto
Join Date: Oct 2017
Location: New Jersey/Philadelphia

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Quote:
Originally Posted by -Eidos View Post
Quote:
Originally Posted by johnung View Post
After the FlexFuel required hardware is installed, a BootMod3 MultiMap tune must be flashed. A base map is chosen, I presume that it is supposed to match the base fuel being used in the tank before E85 is added.

So that might be say one of these:
1) Stage2 91
2) Stage2 93
3) E30

Assume that E50 is placed in the tank and the CANBus sensor tells the ECU that it's fuel is E50. Since FlexFuel algorithms automatically scale the tune up to use E50, then are all three of these tunes essentially identical? Or does the fact that the three started as different tunes effect their performance with E50? Thanks!

Car/Mods: F30 335ix N55 EWG FBO with Dorch2, LPFP upgrade, Zeitronix CANBus sensor, 3.5bar TMAPs.
Welcome to the flex fuel club! It's a very convenient life
Wow, you are running some heavy duty stuff
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