Quote:
Originally Posted by Bindegal
So when running lean - as I´m planning to do 20-22 AFR... how mugh ignition timing is needed compared to stoich 14.7?
A friend of mine says that more timing is needed because the combustion at such lean mixtures is actually slower than stoich.
I´ve had a hard time figuring out how much timing is used on the standard engine... no logging software available for my stock 1998 ECU 
/Allan |
Lean burning AFR engines have relatively slow combustion and require considerably more ignition lead time. What that actual advance is going to be is dependent on the engine and other factors.