i have heard all kinds of arguments about the ability to run a highly modified car with a MAF on the stock chip or off-the-shelf aftermarket chip. some say it will run fine, others say it will run fine but you need an AFPR, still others swear you will need DFI or prom burner. seems every article about programming is with SD. i know a maf will measure the increased air coming in and apply more fuel so it is more responsive to mods. i would like to hear real info from people who have actually done it, i.e. sucessfully tuned their modded car using a stock chip and AFPR. also tell what didnt work. thanks.

 

With a real hotrod, you'll peg the MAF. You can carve up the MAF and then get some better performance, but it messes up the calibration. A MAF reads airflow, and that means it can read reversion, and give you a false high reading at times.

The MAF calibrations are courser in increments for tuning. The timing is calculated tru a calculation called LV8 which tries to figure out engine load. So it's not quite as finely set as it could be.

I've run MAF, SD, and a combo of both in 3 different calibrations using 2 different codes, in the same ecm. The SD wins, hands down for me.

MAF can be somewhat easier to tune for some folks, since there are fewer calibration points.

There are some GNs using MAF systems running in the 9's. And 2 of those picked up .2 secs when converting to MAP, using the same ecm.

Just depends on what you call properly calibrated.