Quote Originally Posted by BillBoost37 View Post
Fuel mileage and bad shifting, wrong shift points etc can be related to needing a tune up.

When was the last plug and wire change?
Last time you cleaned the TB/MAF?
few months ago for tune up. and Cleaned MAF last year.
billboost- i have noticed my shift points moved for overdrive. usually it shifts around 45,46ish... now it likes to shift around 48, 49 most of the time around 50 though.

i put some of the cheaper NGKs in there. should i change them out for better plugs?