ok after getting my car tuned on a p28 ecu chip on chrome my car have been eating more gas. i used to get about 290-300 miles per tank averaging 30-32 mpg but now im getting only about 250-260 miles per tank averaging about 25-27 mpg. is this normal??? my driving conditions are still the same not always smashing and these miles are like 75% highway and 25% city driving. always shifting between 3k-3.5k rpm.

mods: b16a3 with itr cams, aem cai, dc header, 2.25" piping to itr muffler. tuned on p28 ecu with chrome.

 

dang....250-260.....i get about 140 on my 97 hatch b16a2....i/h/e....stock p28....Does that make u happy?

 

damn why are you running a stock p28 on your car for? hahaha.

 

Mines the same way, but not so bad, i probably lost about 1-3mpg but thats not a problem for me. I made 169.3whp at ctr dyno.

 

cause its vtec compatible & p28 and p72 is all i have....both obd1...

 

what were your mods to hit 169.3 hp?