Hello all,
A request for information and opinions on the ignition timing of a V6 motor run by a Bosch 7.0 ecu both the injectors and the plugs are feed from this i.e. no distributor. Its a 3 channel system i.e. the plugs and injectors fire twice per 4cycle. I have fitted a LPG system to this (the petrol is still there for starting from cold). It is said that a LPG system will work better by advancing the ignition by ten or eleven degrees. I have a Snap-on MT2500 scanner and it looks like I could advance the timing with it.
Supposing I can do this
(1) will the timing stay advanced or would the various sensors detect this and return it normal?
(2) if it did stay advanced on LPG what would happen when it was run on petrol would the sensors "knock sensor"? retard the timing if it picked up any rough running of the motor?
(3) would experimenting with a 10 deg adjustment do any permanent damage?
BTW the scanner says the ignition advances by about 35 deg when the motor is revved with no load.
George.