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

Tuning closed loop idle

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Old 01-17-2006, 10:07 PM
  #196  
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Re: Tuning closed loop idle

guys, any update to this? My car is basically at, where we all left off!!
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Old 01-18-2006, 02:24 PM
  #197  
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Re: Tuning closed loop idle

Hey don't feel bad. I've been messing with the same problem for a year and a half myself. The best solution I have found yet is to max out the BLMs at 128 in the ECM Constants table. That way the motor can pull fuel if it needs to but can't add any more. Like other guys have said, extended idle, like when in traffic, will make the check engine light come on. But it will reset itself when you start driving again. As long as the O2s show the motor doesn't need more fuel above idle then there's no harm in maxing out the BLM value at 128. After all, a carburator can't adjust at all and they work pretty well. I've also got some spark knock which I am trying to get rid of by manipulating the VE tables, that's an ongoing thing. In fact I'm going to load a new program in the car for the ride homefrom work. My cam has 230/236 @112 and I didn't think it would be a problem to tune; wrong! Ya know it's painful, but I have to admit that I'm learning some good stuff from having to play with the programming. My set-up is pretty close to yours so if one of us ever gets it right we should share the file. Good luck.

Last edited by brutalbird; 01-18-2006 at 02:27 PM.
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