[stang boi 91]

heres my set up edelbrock rpm heads, rpm 2 intake 70mm tb, 30lb injectors, 540 lift cam, 1.7 rocker arms, and the motor is bored out to a 306 with dish pistons, how big shoul I go on the maf 75mm or 80mm?

[Haggis13]

Why not get a bigger on? 90mm Lightning MAF are cheap and leave lots of room to play with.

[Racinjason81]

you should match your maf size to the power you plan on making
cuz too small of one will cause a restriction and may peg and mess up your A/F ratio

[mikebert]

Originally Posted by Racinjason81 you should match your maf size to the power you plan on making cuz too small of one will cause a restriction and may peg and mess up your A/F ratio

How can you have too small a one that messes up your A/F ratio? MAF sets reports your air flow, so . . .it can only report as much as it draws. Getting too small a one may cost your performance, but I don't think it'll hurt your engine.

But yeah, 70+, go for it. As long as it's properly calibrated for your injectors, get whatever fits your budget.

[Racinjason81]

what happens when you peg your meter?

[mikebert]

Originally Posted by Racinjason81 what happens when you peg your meter?

How do you peg the equivalent of a lightbulb filament?

[Stangzilla]

Originally Posted by Racinjason81 you should match your maf size to the power you plan on making cuz too small of one will cause a restriction and may peg and mess up your A/F ratio

Mass air meter should be the same size or bigger than your throttle body.. In your case I would not go bigger than a 80mm..

[1slo5.0]

You can put as big of a mass air meter on as you want and it will not cause any problems. It is one of the only times where bigger is always better.

[Iwannagofast]

When i asked about a good MAF a lot of people said the pro-m is pretty good.....

http://www.jdsperformance.com/index....=item&inmake=0

that just an idea for one depending on your budget

thats the one i plan on gettin