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T77911S T77911S is offline
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Join Date: Oct 2006
Location: MYR S.C.
Posts: 13,546
AFM sensor plate height

i have seen the posts on here about this but still want some clarification.

my sensor plate sits perfect with no fuel pressure. with the pumps on and CP at 3.6bar the plate rises .020 of an inch measured at the center of the plate. it was not like this before. it is a little different depending on if the pumps are on or if i follow the procedure i have seen where you turn the pumps on for 10sec then turn them off.

problems are now the car likes to run rich, like in the low 12's at 3k rpm. my boost AFR hits the low 9's. my acceleration AFR is lean.(depending on where my cruise AFR is.) driveable is 15.6. not driveable is in the 17's.

my fuel flow is very good. 3.7-3.8 oz's for 10 minutes with the sensor plate open .070 of an inch at the center. (3/32 at the far edge).

my sensor plate does not vibrate like others have.

i dont want to spend $600 on rebuilding my head if it does not need it.
86 930 42kmiles [__] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD
88 BMW 325is 200K+ SOLD
05 BMW 330CI 130K:: [__] RUNNING: [__] NOT RUNNING:
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Old 12-04-2014, 03:35 AM
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