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Terry @ BMS Terry @ BMS is offline
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Join Date: Jan 2008
Default 09-12-2019, 03:40 PM

Originally Posted by bbrillon998
Im going to jump on this train to report that i seem to have something similar going on now. Map 1 runs will sometimes cause the car to go into limp mode. Map two almost certainly will go into limp mode with a misfire. Took The jb4 off completely and ran around for a few days... everything okay no limp mode no misfires. So do i need to do a few runs with map 0 and 4 to log ? When i get a misfire it freezes the JB4 App.
Are you running a meth kit also like OP? If not whatever advice I'm providing in this thread may not all apply.

If not running a WMI kit the most often cause of what you're describing is a cracked plug or failed coil pack. The misfire will also trigger the JB4 to turn off due to electoral over load as the coil sends a ton of power back through the cars grounds.

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