No thanks

Splain the "timing 25" locked to me , what engine ?
Rated edge compression on 91 octane, under load it doesn't like more than 28 on 91 "with octane boost ", it likes 25 in general.
If i run straight 91 , no octane boost, and 28 total...it will cough a little when you turn it off.
I initially ran 20 with an 8 degree bushing ,mechanical adv=28...but idle was dirty and to get the transfer slot right i decided to lock it....it likes 25 locked for 91 in general. Fwiw ive tried 32.... nope. Its fast burning quench.
It's a 410 .040x4" 10.1 quench dome set to .030 with a narrow soild roller .574 [email protected] 108 lobe cenrlter, int 104
Demon carb. This just started happening about 2 weeks ago.