Im not ECO.... Im just a jew b@stard that hates spending half my paycheck on gas.
and stick with recommended parts from the parts store. then track your MPG after a few tanks set a goal on your target MPG. Be realistic with your self though. For me I started with 52mpg, SO I set a realistic goal of 60mpg. Well my last tank netted me 59.11 mpg!!!! all thanks to this place for tips and tricks.