Hey guys recently ive got my 8th gen civic tuned ,so after the tune my rpm was idling at 1500 rpm.Now the problem i was facing is bad petrol millage ,i was getting 12 to 13 km/l but suddenly it dropped from this to 5 km/l and there was to much fuel smell from the the tail pipe .So ive got it tune but the mechanic didn't had a computer .so i was driving for couple of days and i was facing the same problem again of bad petrol mileage and the guy told said its because of the rmp since is idling at 1500 and also because after each tuning ecu should be properly reset .So i did today and now my idle is at 800 k .So you guys think my avg will be better now ?