Is it possible to completely disable PE on a $8d calibration? If it is set to 100% it still enables while I am trying to adjust my VE up there.

 

How about just setting the PE AFR to 14.7, or 0% AFR correction?.

Just be REALLY careful about detonation when doing that. Lots of plug reading.

You can get to the point of tampering with the acoustic signature enough that the Knock Sensor is Deaf to the new noise.

 

I feel like a moron for not thinking of doing that.

 

But won't entering PE, even with an AF of 14.7, still cause the Integrator to be set to 128 and BLM set to 128 or greater, and no O2 sensor feedback? (I don't want to say Open Loop or Closed Loop, or it will start a flame war - let's just call it PE Mode)

 

That is correct, but it will still allow me to see if the VE is correct based on the WB reading.

 

when adjusting the VE at higher rpms i set TPS for AE to a higher value. my PE was set in bin to 70% so i did not need to mess with it(now it is 50%) . are you certain it is PE you are involking and not AE? cant see how PE could be involked if you have it set 100% TPS? now i never thought of AE/MAP coming on(till now)? when i looked at VE/higher rpms i did not have a WB02.

 

And the problem with that is?.
There's so many mingled and tangled items in the code, IMO, it's best to invoke things as they are normally executed.

 

I was just assuming he wanted to have closed loop to tune - didn't know he had a wideband running.

If you have a wideband that you can trust, and know the commanded AF, it's not totally stupid to tune VE to achieve that AF in PE, if it's dangerous to run (for extended times) at those loads at stoich (but up to a point - don't expect much accuracy below 12.5). I'd recommend setting the PE AF to a constant at all RPMs first, though, to make things easier. Also, I'd recommend driving a bunch in normal closed loop mode and logging to see if closed loop is adding or subtracting (at those loads) before PE is entered to verify and make finer adjustments. It may not be 100% precise, but there's a good 5% of room to not really have to worry about if you tune to 12.5-12.8:1. Also, when in PE, you're usually in RPMs that are way above daily driving, so it's not likely to see too much Block Learn going on up there.

If you do set PE to 14.7, I'd have to recommend disabling PE spark adder while tuning there (and I'm sure Grumpy will say remove it all-together).

 

I guess, I gotta splain this since no one's gonna run with it.

Set the PE low, that disables the closed loop mode.
Then set the VE table(s) to refect what AFR you want to run (in the higher load redions).
Then you don't have to worry about the high load PE AFRs being stoich., you just then tune for what makes the engine happy.

And yes, you just leave the PE enables at the lower specs..
For the lil v6, I think I have em set at ~20-25% TPS.