Quote:
Originally Posted by lbjailer
If you had a miss-fire wouldn't it be there even without using a tuner? But if that fixes your issue, let us know.
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The truck would only misfire when running on the custom tunes. Stock, tranny only, and the canned tunes did not exhibit these symptoms. I wonder if the tune stressed the ignition system enough to not be able to keep up due to the battery and/or possibly loose plug. Only time will tell.