Aftermarket MAF

Ike83 · Sep 28, 2006

Alright, first of all, I'm new here on this forum, so I would like to start out by saying hello to all you Mustang enthusiasts. I recently owned a 1998 black Contour SVT, which I dumped $2,000 into only to have it totalled due to an older lady pulling out in front of me. Believe me I was hard broken for about two weeks, until..........

I bought my current car. A 1987 Mustang GT:

302 ported heads
3-angle valve job
Cams
Longtube headers
Flowmasters offroad H-pipe
Aluminum driveshaft
3:55 gears
MSD ignition 6AL
5spd Hurst shifter
King Cobra Clutch
Underdrive pulleys
BBK cold air intake
70mm BBK TB
MAF conversion

Anyway, here's my question, and I'm sure it's been tossed around and answered quite a few times, but I just want to know what y'all would do in my situation. As you can see up top, the guy did a mass air conversion on this '87 stang, so I'm wondering.....

If I were to get an aftermarket MAF sensor, what size and brand am I looking for?

srothfuss · Sep 28, 2006

Measure the opening of your current MAF. If it's stock you should end up with 55mm

1" = 25.4mm

There are a few aftermarket brands that you should try

Pro-M [no longer called pro-M it's something like Professional Mass Air systems]
C&L (some people love them) and other people hate them

bullitstang1313 · Sep 28, 2006

Pro-M now PMAS seems to be the favored company for mass air meters. You'll need to make sure you get a meter calibrated for your injectors. If you get a PMAS, you'll have to send it in to get reprogrammed for other injectors if you ever decide to change. C&L on the other hand uses different size sampling tubes to fool the sensor. That is why some people hate them and others love them.

vristang · Sep 28, 2006

Ike83-
welcome aboard!

First thing is to find out what you have currently.

It could be an aftermarket maf already?

jason

bryce93lx · Sep 28, 2006

the aftermarket maf is good 73 or 76 is a good size, but a 65mm throttle body would help things even more

Ike83 · Sep 28, 2006

I already have a 70mm throttle body, and I just talked to the previous car owner who told me that it is still a stock MAF sensor. What I'm wondering, is how are you suppose to know what size MAF to put on. Is it by the size of your fuel injectors? Does it have to do with the size of your TB, or is it by the type of ECU? What should I be looking for (size of MAF) based on the modifications I've listed up top.

vristang · Sep 28, 2006

Ike83 said:
I already have a 70mm throttle body, and I just talked to the previous car owner who told me that it is still a stock MAF sensor. What I'm wondering, is how are you suppose to know what size MAF to put on. Is it by the size of your fuel injectors? Does it have to do with the size of your TB, or is it by the type of ECU? What should I be looking for (size of MAF) based on the modifications I've listed up top.

Dang, that isn't an easy question.

If the TB is 70mm then you should stay above 70mm on the MAF.

I have never found any good guides for difining the minimum size of a MAF, but you can't really go too big.

Make sure that the MAF you get is cal'd for the injectors that you will be running.

Other than that, I'm not sure.

When you order the MAF, you will have to specify the computer you are using, but the size of the MAF will not be determined by the EEC.

I would look for something around 76mm or 80mm.

jason

Ike83 · Sep 29, 2006

Now that's the answer I've been looking for. Thanks Jason. I only have one more question at this point.

What gains (hp) would I expect to notice by installing this aftermarket MAF? Am I looking at a gain of 5 hp, or am I looking at gains up to 15 hp?

Is this mod REALLY worth the money, or are the gains so insignificant that there is no point even bothering with it?

Daggar · Sep 29, 2006

I guess that will all depend on how much of a restriction your current setup is. There's no crystal ball here on the internet for such a thing.

vristang · Sep 29, 2006

Daggar said:
I guess that will all depend on how much of a restriction your current setup is. There's no crystal ball here on the internet for such a thing.

What he said^^^

On a completely stock Mustang, I have heard that a larger MAF is good for about 5-7hp.
Keep in mind this is 'Internet Hp' which may or may not be similar to 'Honda Hp'

jason

Flavadave4 · Sep 29, 2006

vristang said:
What he said^^^

On a completely stock Mustang, I have heard that a larger MAF is good for about 5-7hp.
Keep in mind this is 'Internet Hp' which may or may not be similar to 'Honda Hp'

jason

LOL

Welcome abaord.....I dont really think you can go "too big" on the MAF.....on the throttle body you can though because of the throttle responce of a larger units is a little slower

gcwh02 · Sep 29, 2006

upgrading MAF is def a good idea with your setup, I have C&L and never had a prob., some people do some people dont. The Pro-M or PMAS is the other favored option, but they both have the pros and cons like everything else in performance. C&L is a little bit cheaper. Oh, and you have one cam

Ike83 · Sep 29, 2006

Whoops! Sorry about that. My last car was the Contour SVT, and it had dual overhead cams. Kinda got into the "cams" rhythm. Anyway, yes, I do have one cam.

Aftermarket MAF

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