At which HP level does the AFR become a concern? I started with the 50hp shot to make sure everything is working properly - and it is and I'm ready to move up to the 100hp shot.
If your spraying any time is a concern well to me...... but your A/F Ratio should be around 11.5-11.7.....Would be safe....As retarding your timing 1 degree per 25 shot....
My initial timing is a 10*at all times and I adjust timing in the timing tables via TwEECer. Right now the timing table is at the stock settings - max at WOT is 26*.