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

Tunercat WOT tuning

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Old Nov 28, 2010 | 07:39 AM
  #1  
mightymouse383's Avatar
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From: Oviedo FL
Tunercat WOT tuning

Which table in TC is the one for tuning WOT?
Old Nov 28, 2010 | 11:06 AM
  #2  
bobdec's Avatar
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Re: Tunercat WOT tuning

Your sig says '97 so you either have an old TC OBD2 program or you converted to OBD1. Following is a cut/past from the ODB1 TC version 2.3 Help screen, it is not in the newer TC beta version 3.24 somehow it was eliminated.. If you are TC ODB2 then just disregard as I can't answer for that version..
--------------------------------------------------------------------------------------------------
WOT % Change To Fuel/Air Ratio Vs. Coolant Temp.
This table is the percent change to Fuel/Air Ratio used at or near wide-open throttle (WOT) versus coolant temperature. The values from this table and the WOT % Change To Fuel/Air Ratio Vs. RPM are summed to arrive at the WOT Air Fuel ratio.

The resulting air / fuel ratio can be calculated as follows:

WOT AFR = 14.7 / (1 + %Change vs Cool/100 + %Change vs RPM/100)

For the selected RPM, suppose the percent change to Fuel/Air Ratio from the RPM table is = - 5.1 and the percent change to Fuel/Air Ratio from the COOLANT table at the selected coolant temperature is = 22.7, then the approximate WOT AFR would be:

14.7 / (1 -0.051+.227) = 12.5:1 AFR
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Also there is a "TPS Threshold for PE Vs RPM Vs Coolant temp" table that sets when you enter WOT (PE mode) in case you want to enter WOT at different parameters for your setup.
Old Nov 28, 2010 | 08:56 PM
  #3  
mightymouse383's Avatar
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Re: Tunercat WOT tuning

Thanks Bob, I will start to tune alittle more once my wideband gets here, Yes I did convert to OBD1 and have TC 3.24
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