STFT tuning How to turn off pe
Just change the enable map kpa to 640. That's what I do.
I also don't worry about disabling LTFT, I just copy both histograms (LTFT and STFT) 1 at a time and paste special-multiply by percent.
I often worried about if having PE disabled could cause a piston meltdown or anything but I believe since the extra PE timing isn't added it should be fine. Either way, I don't stay in the high load/high rpm areas for long without letting out.
I also don't worry about disabling LTFT, I just copy both histograms (LTFT and STFT) 1 at a time and paste special-multiply by percent.
I often worried about if having PE disabled could cause a piston meltdown or anything but I believe since the extra PE timing isn't added it should be fine. Either way, I don't stay in the high load/high rpm areas for long without letting out.
Turning off LTFT's is fine if you know why you are doing that & how the work, do you?
How could you ever get the VE table correct for cells that are generally in PE if you didn't disable PE?
Do you really want to tune @ Stoich when you should be in PE, isn't that hard on motor's? Yes the VE & MAF tables will tune just fine, same as if you set up the entire tune to run OL.
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I often wondered, as I mentioned earlier in this thread, if it is hard on the motor. I came to the conclusion that it is probably not since extra timing is not added, but I still try not to stay at high load/high rpm cells too long without backing out.
Actually running OL scares me more because you would have to spot an issue and back out prior to damage whereas in closed loop the PCM makes corrections much faster than I can.
I am new to tuning and am by no means an expert, just trying to help the OP out with the question asked.
Last edited by Bowtie316; May 23, 2013 at 03:20 PM.
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Verdad Gallardo I would never tune with the PE turned off, you need fuel when you start loading the motor. So don't load the motor if tuning OL scares you, get someone to help tune Hi Load & WOT area's.
For you idle, part throttle & cruising condition's you can tune using the FT's quite nicely. If you are really out of wack with your combination start with STFT + LTFT's that will give you a 50% window.
For you idle, part throttle & cruising condition's you can tune using the FT's quite nicely. If you are really out of wack with your combination start with STFT + LTFT's that will give you a 50% window.
I agree with this fully, however, I continue to the higher rpm/load cells as well.
Last edited by Bowtie316; May 24, 2013 at 10:44 AM.
