kriscribner

hey guys i threw in my new sct 90mm MAF tonight cuz the guy who tuned my car said it would really help control my air fuel ratio. the car is running awful! its under revving at idle but i tuned the idle up to over 1000... i step on the gas and it ****s out on me! help please!!

oxfordgt

What injectors is that maf calibrated for? Do you have a supercharger?

281stang

it sounds like it might be a vac prob, did ya check all your lines?

Cornbread01

the maf has to be calibrated to the injectors.... do you have a mafia with it???

281stang

what happen to the gut that tuned your car...he should know..lol

kriscribner

i called the shop but its too late at night... the site didnt say it had to be tuned for the injectors its the sct one... and idont have a mafia... cant i adjust my air/ fuel ratio with a predator??? it cant be vacuum lines cuz i didnt touch them to put it in...

dave22478

Why did you replace the MAF?

2000GT4.6

Unless you have a supercharger/turbo or your running a built n/a engine you don't need anything but the stock maf.

You cannot just drop a new maf in and slam the hood. Its not the maf that needs calibrated, its your ECU. You have to retune the computer for the maf.

Having a maf "tuned" for injectors is a misconception. You don't tune a maf unless it is a tunable one like a C&L that comes with tuning tubes (and imo its a bad idea to do this anyway, as changing this can cause the car to run like **** at idle/low load situations). The maf reads what it reads, you tune the ECU To know that when its reading xx volts it is pulling in xxx cfm and you need xxx fuel.