Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

Is there any point in correcting...

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Old Apr 14, 2003 | 03:03 AM
  #1  
Soma07's Avatar
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From: Kissimmee/Orlando, FL
Is there any point in correcting...

BLM's? I mean as long as they arent maxed out (160) or bottomed out (108) the ECM is always going to maintain the A/F ratio at 14.7:1...

IMO, having them all at 128 is nice but as long as they're within reason I dont see the point in getting them "perfect".

Am I missing something here? I don't think I am but having some confirmation would be nice...
Old Apr 14, 2003 | 11:25 AM
  #2  
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I'm supprised you dont know this one The answer is "simple" really, yes while the computer may be adjusting your BLMs for you, this would also destroy your WOT stuff. You could always send the computer into open loop @ 3000 RPM +, maybe that would fix it, but I'd rather have it setup right across the board.
Old Apr 14, 2003 | 03:11 PM
  #3  
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From: so close I can taste it...
On my car, as well as my friends', the closer the blms are to 128 the better the part throttle response is and the better the car runs overall.
I would say get them to 128 +/-4.
Old Apr 14, 2003 | 05:26 PM
  #4  
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Originally posted by Dr.Mudge
I'm supprised you dont know this one
Well I thought I did I always forget the PE -> VE relationship.

Although since most part-throttle stuff is <3000rpm while most WOT stuff is >3000 in the end its probably not that big of a deal. I guess thats the difference in having it "right" vs. "close enough".
Old Apr 14, 2003 | 11:36 PM
  #5  
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Here is another thought, if the BLMs are so whack, they are probably split too - bad for power.
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