I now have a flowmaster muffler and I recently did the tranny job (filter,fluids). Since both, my rev'd tend to hang when I lift on the throttle, in other words, you life off the throttle and the rev's remain a little high and then drop to where you think it should. Happens on normal driving so not a case of the engine not being properly warmed up.
So, do you guys think I added too little/much tranny fluid or do you think the flowmaster has something to do with it?