Just as an update, I reflashed with the latest version the Stage 2 tune and I also decided to use the 93 octane flash. I mix 2.5 gal of E85 with a tank full of 91 and it works great.
You know it is good when you punch it and there is a few milliseconds of fear that hits you from the force of the acceleration. Then comes the evil grin.
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2017 F30 340i RWD // MG Flasher // xHP // CG DS-1 // ZTR ZMP ZCW ZLP
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