Cerbera 4.5 timing table

[mrniceguy351]

Gentlemen,

I am currently wiring my Cerbera up for a Haltech nexus R3. (Video to come)

In the evening once i am sick of crimping and stripping I am trying to get some sort of a plausible configuration on the haltech software. At this stage i figure I will run it based on TPSxRPM (same as stock) even though the Haltech has a built in MAP sensor (which maybe will come in useful once it's all running??)

Does anybody have the stock TPSxRPM timing table? Even if I pull a couple of degrees out for safety it would be helpful to get me in the ballpark.

Regards
Simon

[Flatplane8]

Afraid I can't help, but looking forward to seeing how you get on. Could the stock MBE adaptive table give any clues?

[mrniceguy351]

I believe the adaptive table is only for fueling.

[Markb139]

I’ve been trying to find this with a combination of a reverse engineered firmware and tracing the MbE942 circuit. I’ve then asked a couple of different AI bots to find how the timing works.
It produced a few tables, but I’ve yet to see if they look right. The AI may have made up the whole thing

[Markb139]

Deleted the tables, they are a bit nuts.

Cheers
Mark

Edited by Markb139 on Monday 27th April 20:01

[spitfire4v8]

No idea how it managed to generate those numbers but good luck trying to run over 60 degrees of advance at wide open throttle ..

do NOT use those numbers, you will destroy your engine even if you got it to run.

[Markb139]

Does anybody happen to know what angle the crank sensor sync (the 2 tooth gap) is relative to TDC.
We've built an emulator that can exercise the firmware which produces appropriate looking ignition signals.

[Markb139]

This is a capture of the mbe on my bench running at 1000rpm. Just showing odd bank signals.
Edit: cylinders 1+7 signal is the blue trace. 3+5 is the purple line.

Edited by Markb139 on Thursday 30th April 17:36