bmk6795
New Member
Alright guys i have a 2001 civic ex coupe and cant figure out why im getting 27 mpg. Gonna list everything that has been done to the car so you guys know what im working with. D17A2 engine, rebuilt head, every seal in the head is new, head has been shaved, new rear main seal, new head gasket, new alt, new water pump/timing belt, new belts all around, tranny over hauled (every bearing in tranny is new), new excedy clutch kit, 10lb flywheel, aem cold air intake, sittin on 17" rims with new tires, 0 gauge big 3 done in engine bay, single 12" sub (sub and box weigh about 60lbs together), 2 amps pulling about 1000 watts, new ngk iridium plugs, fresh oil change, and new filter on the air intake. Thats about it. All of these parts have about 4-5k miles on them. Before rebuilding everything i took a beach trip and got about 41 mpg (all highway). Didnt really check much other than that trip. Now im getting about 27 mpg weekly. I drove the car like a saint this past week shifting at 3k for 1st and 2nd and at 2.5k for third and fourth, didnt down gear at all, didnt rev ever and got the same exact gas mileage as i did when i beat on it every once in a while during the week. Any ideas why this motor, made for fuel efficiency, is getting such low gas mileage?