Originally posted by HighPSITalon:
What about changing/replacing/recalibrating the stock MAF with the install of a SC? Is it needed? Will the stock MAF max out with the added air flow(8psi)?


No need.

A MAF is just an instrument for measuring incoming airflow. No need to recalibrate it.

Now the supplied chip will recalibrate the A/F fuel curve. I don't know if they do it the proper way by reworking the MAF transfer function or by just using global multipliers (probably the later it's easier, but very crude!)

The stock 70mm MAF (roughly 58mm taking the center post into account) has supported up to 300 FWHP to date. That's probably getting to the level of it's flow limit. (~400 crank guesstimate)

The 75mm Pro-M (~72mm considering it's sample tube) should support 600-650 crank HP (serious overkill ) & do so without the large flow disruption of the center bar post.

Even though the stock MAF is "capable" of supporting good HP numbers. It is still a flow restriction. Swapping it out for a 75mm Pro-M on a moderately modified SVT nets good gains. (~5-8 FWHP) They should be even greater considering forced induction. (even a 5% gain = 13-15 FWHP!)

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