Quote Originally Posted by PlayingWithTBI View Post
FWIW - I just tried @84Elky's Spreadsheet (set to 32* @ 3200RPM) on my TBI with aluminum heads and a fairly mild Lunati Voodoo cam (208/213). It seems to pull better throughout but, I do have some KRs at higher MAPs and RPMs up around 5200.
Agree with Fast355 that dyno is only way to really measure objectively, but SOTP feel for most is all that's practical.

PlayingWithTBI - Sounds like all-in might be reduced to 30-31* to see if knocks go away. Would be interested in what you notice if you maintained spark at all-in value after all-in RPM; or decreased it, but much less than currently. My bet is not much difference noticed if at all. IMO, the area above all-in spark (that is if at proper RPM), contributes very little if any to HP or torque and is hardly noticeable unless an all out race car on a dyno.