So, I had a 318 with a 500cfm on it, got crappy mpg(10-11)-tuned ok. Changed to a 360(mild), 650 eddy, tuned decently, 10-11 mpg. When first started, takes a bit to get it moving, is that the pump? Anyway, thinking the tranny is part of the cause of my mpg , thoughts? BTW, 36 total, about 18...