I've got a Bosch HFM (pn 0-280-217-800) that came with my S52 swap that was meant to be used alongside an OBD1 conversion. I have since converted the setup back to OBD2 and installed it in my late model e30. Looking it up online I see reference to the HFM being used on OBD1 540/740s and OBD2 740s. Curious if anyone can confirm whether this HFM can be used on an OBD2 setup?
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2003 Z4 3.0 6-speed- Silver, 19's, daily driver
1990 Silver 325i- Lowered on H&R OE Sports, e90 drop hats, KYB shocks, color matched rocker panels, 16" Emortal RS wheels on 205/50/16 tires... Currently getting a full refresh including an S52 swap!
1997 Black Ford Probe GT- Stripped to 2220lbs, MS3X, Forged motor in midst of assembly... Dyno results and 1/4 mile times pending -
It can be used, if you change the MAF scalar in ecu for that. But in stock/close to stock engine, you get zero benefit from it.
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