Plenum Theorum

[Headsex]

I actually think it was your 'mate' that told me. You know the guy, he tought you how to set boost duty cycles or whatever it is to maintaitn preset boost irrelivent of air temps. Same guy that blew a ringland on his Auto F6 from detonation......... from his own tuning :banghead:

Now there's some

Ahh yeah.. Nah, his your mate

And so we're clear The only person that "helped" me learn how to control boost in closed loop was Jerry's developed Capa manual.. The Value file "your mate" sent me was just as bad as my initial attempts of controlling boost in closed loop.

But yeah.. no individual cylinder fuel trims, so you should let "your mate" know his wrong

[ratter]

I have read

"The PCM is told how far the o2 is from the cylinder head and it is then given a time window of when it expects to see the exhaust from the last cylinder that fired. It knows which cylinder, from the firing order. At this point it expects to see that firer sequence in the window while calculating RPM, the tuner can set this window. Whe it does it can then adjust the mixture for that cylinder based on the o2 sensor."

Is this correct or not?

[Headsex]

I have read

"The PCM is told how far the o2 is from the cylinder head and it is then given a time window of when it expects to see the exhaust from the last cylinder that fired. It knows which cylinder, from the firing order. At this point it expects to see that firer sequence in the window while calculating RPM, the tuner can set this window. Whe it does it can then adjust the mixture for that cylinder based on the o2 sensor."

Is this correct or not?

that's what I also read (possibly the same source).. However, I have not noticed any refrence to it in the pcm's code to suggest it does anymore then general stft / ltft trims on each bank..

d.

[ratter]

that's what I also read (possibly the same source).. However, I have not noticed any refrence to it in the pcm's code to suggest it does anymore then general stft / ltft trims on each bank..

d.

Yeah possibly the same local source

I understand that it changes the stft and ltft and I was pretty impressed that it could change each cylinder if needed, but how do we prove it works unless we put seperate EGT's on each cylinder.

Moving the o2 with different extractors would cause havoc then unless you adjusted the o2 transport delay function and it could be pretty hit or miss, because it you had it slightly wrong it would be adjusting the wrong cylinder.

It's all very interesting though