Maf Question?

[aod92]

what kind of mass air meters are you guys running? My motor is pretty much stock except for a cam, headers, and an intake. Do I just run a stock one, or aftermarket?

[Heavymetl]

The stock truck MAF is 85mm, and is plenty given your description. Even if it's and F-body MAF the smaller unit should also be just fine and cause no restriction. (measurable loss of manifold pressure under WOT)

[BR3W CITY]

Just run a stocker. No reason to go with an aftermarket MAF unless you start getting into aftermarket-block levels of cubic sexiness, or want to run roots or screw blower.

The need for an aftermarket MAF is rare. Usually you need huge cubic inches in which the flow #'s will create a bottleneck at the MAF. This is usually only the case when your already running something like a Fast102/102 or a Fast/Nick Williams.

You may also need an aftermarket MAF due to bar scaling (stock is 1 bar). This would be the case if you were running a draw-through blower, or running a turbo setup with a MAF.

My opinion is that you run the stock MAF until it becomes a limitation, then just go SD.

[aod92]

Thanks for the help guys. I'm also running a 90mm throttle body. Will that make a difference on the maf size?

[aknovaman]

Run the MAF that your PCM file is set up for. Unless you are turbo or supercharged, you will not max out the MAF flow and table settings. Larger MAF are one of the biggest waste of $$ out there.

Your tuner will be able to see what vehicle the PCM file is from when tuning and make a few minor adjustments for the throttle body.