When I first got the car, it would say 300 miles to E on fill-ups. Fine.
Get a 91 tune, CAI, O/R-H, it says 325 miles to E on fill-ups. Awesome!
Next fill-up, goes back to 300.
Re-load tune for separate issue, goes back to 325.
Couple of fill-ups later, back to 300.
Not the...