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      07-13-2012, 04:43 PM   #233
Mike@N54Tuning.com
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Drives: 2007 335i, 2015 M3
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Quote:
Originally Posted by Sam335ix View Post
Miken54 please chime in please :-)
Many N54 highly modified cars run the JB4 on top of flash tunes, the JB4 would be used for boost control, meth, and in dash goodies, while the flash is used to set the fueling and advance tables, disable the speed limiter, raise the rev limit, etc. It's mainly something used for large turbo cars. I don't see much benefit on the N55 but it's there as an option.

Mike
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