Batteries are a big issue with tuners. I used budget batteries this round and it's been ongoing problems. Gel Cells take a long time to charge up fully. The winter driving around here is tough and too short. Keep that in mind when choosing batteries.

I have since upgraded my alternator to a 180, from a 120, so I'm thinking I amy put the Gel back in. They are so much less trouble. In the winter I have a small charger tied in with my block heater too. Last winter was the first year I did that and it was a problem solver.

This whole scenario solved allot of my tuner problems. @Double R Diesel