Quote:
Originally Posted by socal_e92_sg
i have a jb4 in my e92. Lately ive experience limp mode and the check engine soon light came on when you give it full throttle. They replaced 4 coils last time and two months later i get the same problem. Anyone experience this or know if the jb4 is what is causing this problem.
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Are you running E85? If you are, make sure you run map 5 only, It is the only map that lets you run it. Another suggestion, what fuel are you running and what mods do you have? The JB4 will default to limp mode (map 4) if you aren't running things as they should be. Read his post about what map to use according to your uogrades. Hope this helps..... If not, email Terry with some data logs and he'll get it sorted.
Good Luck.