Originally posted by ssmumich00:
And I guess one has to take into consideration the size post-MAF. . .it might be good for increased air velocity to have a larger MAF that funnels down into the narrower UIM opening (or in this case, gets routed through the intercooler). . . .


Less restriction before the turbo is much more important then NA concerns like tapering.

For instance a 75mm bullet MAF has more flow area then the 80mm Lightning MAF.

I can't tell you about the 90mm because I've never had one and measured it's center bar post.

If I had to guess based on the 75mm and 80mm I'd say it was a hair larger then a 75mm.

{Effective area minus sampling tube area)
75mm Ford = ~3200 effective area
80mm Ford = ~3665 effective area
75mm Bullet = ~4350 effective area
90mm Ford = ~4450 effective area {guesstimate}

The benefit of the Ford MAF's is they seem to have more consistent electronics. Though my Pro-M has been outstanding so you "can" get a good unit.

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.