E39 DMA PID's

[swingtan]

I've been doing some logging on a late 2011 E39 SIDI and most of it is going well. However, if I attempt to log any DMA PID, the PID Nazi comes along and says "No PID's for you.... Now get out!"

So, am I correct in assuming that the DMA PID's are OS / Calibration specific and until I get a valid calibration for the OS, I can't log DMA PID's?

Simon.

[gmh308]

I've been doing some logging on a late 2011 E39 SIDI and most of it is going well. However, if I attempt to log any DMA PID, the PID Nazi comes along and says "No PID's for you.... Now get out!"

So, am I correct in assuming that the DMA PID's are OS / Calibration specific and until I get a valid calibration for the OS, I can't log DMA PID's?

Simon.

Recall Ross saying some time back they were OS specific, and hard to find. Somewhere in RAM however big that is.

[swingtan]

Yeah, I was pretty sue this was the case. I've got the T43 cal after upgrading to RC8 ( which seems to be going well so far ), just waiting on the E39 cal to be done.

[GMPX]

Yeah, DMA PID's have to be defined per OS, it's one of those arduous tasks. They work ok on my E39
Have you logged knock yet?

[swingtan]

Logged knock.......... It's a great saw tooth wave generator.......

[GMPX]

For the life of me I cannot imagine why they were calibrated like that, surely Holden knew 99% of people are going to run these engines on 10cents per litre off low grade supermarket chain fuel.
Try the same thing on E85, zero knock, it's just a shame the fuel economy suffers so much.

[gmh308]

For the life of me I cannot imagine why they were calibrated like that, surely Holden knew 99% of people are going to run these engines on 10cents per litre off low grade supermarket chain fuel.
Try the same thing on E85, zero knock, it's just a shame the fuel economy suffers so much.

They really have continuous low level knock?

What sort of consumption on E85 relative to the supermarket dregs?

[GMPX]

Ian, I set my V2 to trigger a beep on 3+ degrees of knock retard, it was unplugged within about 800 meters due to extreme activity, they are that bad.

E85 around town, fuel econ will jump to about 15.5 - 16L/100. Do the maths at only 20cents per litre cheaper and it's not worth it (as it normall gets low 12's). Plus I need to drive about 10Km to get it.

Cheers,
Ross

[gmh308]

Ian, I set my V2 to trigger a beep on 3+ degrees of knock retard, it was unplugged within about 800 meters due to extreme activity, they are that bad.

E85 around town, fuel econ will jump to about 15.5 - 16L/100. Do the maths at only 20cents per litre cheaper and it's not worth it (as it normall gets low 12's). Plus I need to drive about 10Km to get it.

Cheers,
Ross

LOL - you could get the V2 to play a tune on the knock . That's 3+ degrees of knock continuously. I get lots less on 11.7:1 and E10. SIDI motor has more comp I would guess.

Well at 45%+ more fuel flow at stoich, 16L/100k is not so bad. Only a ~30% consumption penalty. If the price was in the right place it would be worth it . Only time it really works is when 98 is at the weekly high (if one needs 98 that is) - even then its line ball so only benefit is knock and reduced HC's.

[GMPX]

Maybe all the extra money from the Carbon Tax Canberra now has (because they are so serious about the environment), they could throw some more subsidies at E85.