hi-back with questions-1 at a time so as i work this new thing to me-perhaps the answer to the next Q or the one after that one will become apparent to me. see sig what im working with. ignoring the retard provided by the esc system, as i work on the advance curve first, i have the fmu cranked to the max now and am seeing 860-900 on the dvom spliced into the o2 signal wire when boosted to 5 psi so i think safe fat for the time being. i feel timing work right first is most important with this setup. i am on burn #4 now 3 previous got me the idle improvement i was looking for then along with the knowlege that more than 1 table influences starting(prolly at least-huh?) how can i add up all the timing parameters to always arrive at a max figure per increment measured? under max load(high LV8) and light LOAD (low LV8). plus any critical analysis of my approach is welcome-just would rather not crack a piston by detonation. i realize the fmu isnt where its at but in time the 870 is going away and now the 730 probably isnt going in either -syty-thanks