Just got an EVO and will run it for a while. I'm told I'll see 1 or 2 mpg better out of my truck by using it. Will I be able to see anything more less or the same out of it if it is upgraded to a gryphon.
__________________
2005 FX4...Stock with a Gibbson dual exhaust
2010 Fore Edge SEL AWD
1969 Camaro SS
1971 Impala Sport Coupe
|