help?!

[aidanair]

ive seemed to run every test up and down i can think of short of some professional mechanic tools to figure out why my performance is lagging and my gas mileage is.. iffy. after doing intake/throttle body cleaner im at about 14 miles a gallon. i drive a bit on the highway. and im usually conservative. so WHY THE HELL AM I GETTING **** GASMILEAGE?! anyone in the area that could stop by and throw some ideas around?

(marlboro nj)

[sleepyS14]

check your Mass Air Flow Sensor.. might just need a new one.

that brought my S13 down to 100miles to the TANK!!

replaced it with a used one.. back up to 300+ miles to the tank

[aidanair]

tried.. its immaculate

[blinker_fluid]

Dragging brakes, tire pressure, ignition timing off, bad plugs, clogged intake, worn injectors or fpr.... could be alot of things but these are pretty common.

[aidanair]

the checklist..

new oil changechecked brakesjust did cold air intakedid intake and throttle body cleanerinjector cleanerthrough codes, completely normal

[sleepyS14]

could always try replacing the ECU.. it may not show any signs of wrongdoing.. but it's very possible

[DevilMB3017]

Try resetting the ECU.

Normally you can just unplug the battery for ~5 minutes and it should reset it self when you reconnect it.

My Dad lives in Marlboro so I'm in the area a lot if you still are having problems. I won't know much about a 300ZX but a second set of eyes can never hurt.

[aidanair]

oh **** thatd be great, i tried resetting it.. didnt help.. but yea seriously i could use all the help i can get

[aidanair]

bump