Quote:
Originally Posted by johnung
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.
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My car now has upgraded Dorch2 HPFP and Precision Raceworks 2.5 LPFP, along with a Zeitronix CANBus ethanol sensor and ethanol gauge with Precision Raceworks fuel lines. So I am going to run one of the BootMod3 FlexFuel MultiMap tunes. But which one?
It appears that a MultiMap Stage2 or Stage2+ base tune is supposed to be chosen as a minimum quality of fuel that the tune begins at. So if FlexFuel MultiMap Stage2 91ACN is flashed that should mean that even poor quality 91 Octane could be put in the tank if ethanol fuel is not available.
But if the assumption is made that ethanol fuel will always be available, then the FlexFuel MultiMap Stage2+ E30 might be flashed as the minimum tune.
THE BIG QUESTION IS if both of these tunes are provided with E50 fuel, because they are FlexFuel tunes, do they have identical performance, or not? Below are logs of the two. Any analysis/ opinions are appreciated!
BootMod3 FlexFuel MultiMap Stage2 91ACN with E50 in the tank
https://www.bootmod3.net/log?id=6186...0b430ecab684c4
https://www.bootmod3.net/log?id=6186...0b430f4af9958f
BM3 FlexFuel MultiMap Stage2+ E30 with E50 in the tank
https://www.bootmod3.net/log?id=6187...90c6283fe0a9a2
https://www.bootmod3.net/log?id=6187...0b430f4af9966e
https://www.bootmod3.net/log?id=6187...0b430ecab68584