WHat does BLM stand for?
Thread Starter
Team Owner
Joined: Feb 2006
Posts: 23,138
Likes: 117
From: San Antonio Texas
WHat does BLM stand for?
I'm trying to learn all the terminology and abbreviations used here. I tried to look up in the search and found pages on it, but when I click on any of the posts I get the message, "No Thread specified. If you followed a valid link, please notify the administrator". I guess they're still sorting out the history. Could one of you kindly tell me what a BLM is?
Melting Slicks
Joined: Feb 2008
Posts: 3,286
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From: Palm Beach
Team Owner
Joined: Dec 2000
Posts: 90,675
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From: SE NY
Cruise-In II Veteran
... If you followed a valid link, please notify the administrator".
The ECM uses the 15 BLM cells to store fuel injector pulse width trim values, with 128 being the neutral value, i.e. no trim applied to injector pulse width due to O2 sensor readings.
Each cell represents a different set of driving conditions such as throttle position, load, rpm, etc. Cell #1 represents base idle and cell #15 WOT operation, this latter cell has a permenant value of 128 where no correction is applied to injector pulse width.
Le Mans Master
Joined: Jul 2004
Posts: 6,226
Likes: 697
From: Clifton Park, NY ............Clearwater, FL ... 85 Original Owner
I was told awhile back that the BLM whatever had to be changed because when I changed my injectors, the dash fuel mileage was 2 MPG off. Anyone know what that will set me back? It would be nice to have my dash mileage accurate again
Melting Slicks
Joined: Feb 2008
Posts: 3,286
Likes: 6
From: Palm Beach
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From: Database Error Indiana
Injector constant may need to be changed if you have bigger injectors. If you do any mods to the motor, the mpg function will probably be off. Mine is pretty optimistic too.
