PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

closed loop proportional base vs airflow mode

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Old Apr 18, 2005 | 08:16 PM
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Default closed loop proportional base vs airflow mode

98, 99-00, 01-02 all have different tables by quite a bit

here is how they end in order i have listed

800 something
128
401

im just wondering why the large variance and if it would help if i changed these, im posting of injector problems and wonder if this may help me?? says it in help, hp tuners, but keith wont let me know what its for, i keep asking and the response is either post about it or "change the IFR tables, go to help, go to how tos"

well no **** what do you think i have been doing i asked about airflow mode tables
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Old Apr 19, 2005 | 03:17 PM
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Hmm I would like to know this as well
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Old Apr 19, 2005 | 03:20 PM
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i found it out, this adjust teh base pulse width, from what i understand. the large your injectors the smaller this number should be from my experiments. my car runs pretty good now, still need to do some tweaking with it. it effects the amount of fuel charge needed to make the o2s oscillate, the larger the number the more fuel the smaller the less fuel. bigger more responsive injectors need smaller numbers becuase they dump a lot of fuel anyway
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Old Apr 19, 2005 | 05:41 PM
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They say that, but I don't know how much I believe that. I have looked over many a BIN file...take a look at the newer LS1s with similar sized injectors as the 98s. You will see a big difference.
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Old Apr 19, 2005 | 06:32 PM
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yeah i know the tables change a lot. i dropped mine down but i think i went to low becuase the o2s arent oscillating enough now, should i just bump the idle up until it works out good? everywhere else is fine
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