I DONT KNOW HOW THIS HAPPEND BUT IM GETTING ROUGHLY AROUND 19-23 MPG!!!! it sucks. its only happened the last two full tanks. not before. i think im having an idle problem but then again i dont. my tach needle bounces up and down but the car doesnt make different noises. by that i mean the rev doesnt go up and down with the needle. i know i need to change my water pump but i dont think that would cause any of this right? the pump leaks quite a bit of water/antifreeze over night so i know for a fact i need to change it. but other than that the only thing i can think of that is causing this would be my fuel filter. from what i can tell...my idle speed is roughly around 850-1200 so i think im around stock specs lol. MY mods include
Custom CAI
MSD Blaster coil
NGK spark plugs
NGK spark wires
i had a 4g map sensor and thought that was the cause of all of this so i took it out this last time i filled up the tank. so once i run out ill have to calculate how much mpg is doing. so far so good. im at 160mi and at a third of the tank. so i dont know. what do you guys think the cause of MY problem is?
edit.
i also drive a lot. i try to shift between 3-4k and dont drive at OT. oh and by driving a lot i mean i've filled my tank twice in a day...and that was last week.
so help please...i know i should search for the idle threads but they give me a headache since they're like 400 pages long

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