[quote=“BIGHANDS,post:12,topic:38764"”]
ive tuned mine to 12.5 :1 with almost no et/mph gain on the spray
ive been running between 9.5-10.5:1 tune last time out went 9.24@150
[/quote]
Do you have an egt gauge? Timing has a big part in power as you probably know. Without an egt gauge or a dyno its very very hard to tune timing properly.