Thread: Car running LEAN right after it was running fine for what reason?

Originally Posted by GTPpower

What happens if you put the adder tables back to stock? There might have been something there you needed.

Also, you're top swapped? What map are you running?

I'm trying to go by the guide. Lots of people have had success with this method. I'm top swapped with a gtp map.

Tried again. I get tunes dialed in. Take it for another test and the AFR error is now 6% off, where before it was 0-2%. Maybe failing MAF?

Or....just had this thought. My battery might be bad. It went dead half dozen times this winter. Voltage affects a couple tables if I remember. Guess I can have it tested.