General Tuning with S-AFC2 and WB O2

[kicker91laser]

What would be the best approach to tuning with a S-AFC2/WBO2/Pocketlogger? Do I need to be concerned about fuel trims since I have the WB O2?

FWIW, the WB will be using is the LM-1 and I have a Keydiver chip set up for the FIC 750s. Thanks for any advice/suggestions.

 

[16gpoweredgsx]

If you have the chip for the injectors your trims should be within a few percent of 100 (perfect fuel trim). Most of the chips are tuned a little conservative so you can probably make a few adjustments here and there but not much tuning will be needed.

Unless you have a boost leak or a pre-O2 exhaust leak your fuel trims should be in order.

 

[Crazyjoker77]

Were running very similiar tuning setups except im using my MAF-T instead of a chip to compensate for my 680ccs. And yes your fuel trims still need to be set properly as the Wideband is only going to tell you what your reading is and really is only usefull in WOT situations. So get your trims within a few % then go for some hard pulls and get your A/f right on with a decent timing curve

 

[kicker91laser]

So for my low throttle settings, I should tun to maintain good fuel trims and at wot go with the wbo2, sounds easy enough

 

[2gGSX]

Just to clarify so you don't kill yourself over it--your fuel trims (especially LTFT Mid) do not have to be exactly perfect. I normally go for within 5% and call it a day.

 

[spyderturbo007]

I would also recommend you wire the output of the WBO2 into the ECU so you can log the Lambda output. You'll have to convert the Lambda output to AFR after making a pull, but it's much easier than trying to keep an eye on the WBO2 during a WOT pull.