Elijah I run the PBMAF(Pederhousen Big MAFtm) ala 928 S4 type. These MAFs have become very expensive of late with a retail price over $1000. It does require an adjustable resistor circuit of unobtaium origin to iterperet the signal for our ECUs. HTH Hap wit dakine MAF info from Evahboost, Maguire