time for a Z32 AFM?

[maximajim]

Hello,

I recently data logged with my PFC, and I'm wondering if I need a Z32 maf. From ~6300rpm to ~7000 rpm my MAF voltage reads from 5.005-5.030V. Injector duty reaches 72%max.

I have sputtering around that rpm range, is the AFM the cause?

[carl h]

i would say yes.

anything above 5v the ecu has no idea whats going on.

[paulr33]

the ecu has an idea it just cant adjust cos althrough there is most likely more air coming in the afm cant show this increase to the ecu, if its only a momentary 5.0v max out then its problaby ok until you add some more power, if hit 5v at 4500then its a problem