Bosch maf HFM5 sensor 0 280 002 421, 0 281 002 421
Posted: Mon Nov 22, 2021 5:00 pm
Hi all, but generally Matt.
there are bosch hot film sensors (same as gtr or z32 type), which capable to measure up to 1200m3/h.
They re rare counterfate, and not so expensive as new oem z32.
but the problem in correct voltage.
If I don't mistaken, in early (0.9.xxx) revisions of ECU it was possible to make custom VQ MAF map.
in current can't find, or, at least understood volume numbers. I'm attaching diagrams from open sourses for Z32 maf and bosch (0 280 002 421).
there are bosch hot film sensors (same as gtr or z32 type), which capable to measure up to 1200m3/h.
They re rare counterfate, and not so expensive as new oem z32.
but the problem in correct voltage.
If I don't mistaken, in early (0.9.xxx) revisions of ECU it was possible to make custom VQ MAF map.
in current can't find, or, at least understood volume numbers. I'm attaching diagrams from open sourses for Z32 maf and bosch (0 280 002 421).