ECU diagnostics

[Bigrig]

Not quite, there are 2 ways to do it.
1, In post #86 you said your timing (distributor timing) was advanced 4 degrees (I'm assuming that was done so it runs better on LPG). If you leave that as is then your base timing is for gas and you then ECUtalk retard it 4 degrees for petrol.

2, Reset the timing back to standard so your base timing is for petrol then ECUtalk advance it 4 degrees for LPG. That is how I would do it.
If you are finding that it runs OK on petrol at 4 degrees advanced then leave it there (as petrol base timing) and advance it 1 or 2 degrees at a time for LPG until it just starts to ping - turn the radio OFF for this, then retard it 2 degrees to stop it pinging. If an engine is allowed to ping for too long engine damage will occur so be careful.

Tony

Thanks mate - might play with that Saturday morning as I'm still not quite with you (only on the base timing etc bit - didn't think you could set it differently for either fuel source).