Has anyone here ever used one of these on a first gen Expy? If so how much of a milage increase did you get on the economy tune? Would you do it again?

 

not sure on the econo tune but on #2 I get between 14-16city and 18-22hwy OR BETTER... noticeable power increase too. Would I do it again??? ABSOLUTELY!!! do a search on here I have commented a few times about it, and the best price I found on it with the dash mounting pod.