I know this question has been asked many times in many ways. But I am still not 100% sure which map to use. I have 2008 335xi coupe. I have the newest JB4. I have been playing around downloading different maps. My car has DCI, FMIC, Catless DP's. I sometimes run 30-40% E85 for now until I upgrade to a new fuel pump. My question is which map should I be using ? Also if I run on map 5 is the Fuel back end flash better to run with 30-40% E85 or should I just use the JB by itself ? And any info on why one is better then the other would be greatly appreciated. I know this subject has been asked many times, but I still am not exactly sure which one works the best. Thanks you for any replies!:music-rockout:
Rob
Rob