ok lets get some answers to my ? have a 08 550 with 488 gears, camper conv had same but 06 with 6.0 l it got 15 mpg at 70 miles an hour on freeway. with the delete pipe and sct will i get better mpg then the 7-8 im getting now ? got ot think that at least 50% better with the deletand chip????
Last edited by jamoffroad : 05-20-2008 at 05:50 PM.
Reason: spelling i cant and watch the keys