Probably worth mentioning that the Bosch Motronic does have advance variation built in, it has twin knock detectors to allow it to run high advance where needed.
Peter
Peter
soooooooooooooooo disagree...
soooooooooooooooo disagree...i have 10 degree more timing at 0 bar..and 6 at .6 bar..
now those who have not tried multipoint or indeed direct liquid injection, should in my oppion keep shut...
and to those who run same timing on petrol and gas REALLY ought to try advancing on gas....the difference is large..ie 1 sec off 0-60 or 2-3 mpg..
mulipoint..no back fires..precise fueling..better safty..more power..more mpg..WHY you think mulipoint was developed??
JUST my oppion, though its correct..(lol)
Another newbie question: standard RV8 timing? And what should I aim for on gas?
The individual gas nozzles on our 4.0 are just above the inlet manifold to head joint, but the pipes to the gas valve blocks are quite long, so there's a bit of latency in the throttle response, not much you can do about that unless you can get the valves individually mounted close the the ports.
Peter
Probably worth mentioning that the Bosch Motronic does have advance variation built in, it has twin knock detectors to allow it to run high advance where needed.
Peter
I was under the impression that you had to have EFI to have a single point LPG...
From experience, nearly all petrol ecu's have a hard coded limit set that stops the ignition auto- advancing far enough to make full use of the LPG's octane rating. Yes, it will advance a bit, but in order To make full use of this, the ecu needs to have this limit tweaked.
It will advance it to the point of knocking when it's cold, that's far enough.
Peter