Keep in mind that you must disconnect your PCV from the intake if you run a blow-through setup as otherwise there will be oil vapours very quickly on the MAF and the reading will be wrong…
IMO don't bother. Either run speed-density if packaging is difficult or if it is not then run standard setup MAF.
I already have the pcv disconnected from the intake.
To me, it doesn't matter much which maf method I use to tune. My main problem right now is that when I plug the stock maf in it runs super lean at idle, but bringing the rpms up some brings the afr's to a reasonable 14 or lower. I have a forge splitter which worked fine stock. I've moved to about 10in from the throttle body with the recirc hooked up. Its possible I have a small leak after the maf but it can't be very big. Any thoughts on this? (Its a draw through setup)
Since my maf setup gives me problems and I have to drive the car everyday, I've been driving with it disconnected. The problem with this is after I get to 22lbs of boost the throttle closes and if it goes back up that high again it puts the car into a soft limp with no codes. Throttle opening is limited to about 30% from what I can see. Is that from going over the map sensor limit? Or maybe torque intervention? Although I doubt its that fast.