well there you go, our original assumption that the stock tube was 2.5 was wrong..
so all calculations from that point where wrong
so all calculations from that point where wrong

Evolved Member
A good starting factor for a 3.5" MAF housing is 1.54.
This will get the car running and starting well enough for you to do a maf calibration from here that will take into account the type of filter and charactaristics of your particular intake design.
This will get the car running and starting well enough for you to do a maf calibration from here that will take into account the type of filter and charactaristics of your particular intake design.
