Maybe Awk will chime in but I believe he had problems advancing the timing on a hot shot box.
Seems the box's built in timing curve advances it for you too much to also run a key.
good memory paulie !!!!
i have never had an advanced timing plate, still to this day ...stock timing.
i did have a hotshot cdi, installed it with the monster coil at the same time, which was on a fresh rebuild, i was still in the break-in period just puttin around in 3rd gear 1/2 throttle when the piston fried a hole right thru it
this was before the easy available leak down testers on here, seems a yamaha dealership had gouged my cases with a screwdriver while installing a crank for me, causing a massive airleak = boom
so i never got to really test out any gains the cdi/coil provided, and was quick to blame them for the melt down, so they got sold on craigslist while my motor went to ken oconnors for repair, then he found the case gouges/airleak was to blame
i've always considered giving both items another try someday ???
as i understand it, the hotshot cdi adjusts the ignition curve as the rpms rise, versus the advanced +4* at "all rpms" the timing plate or keyway provide
adjusting the timing per rpm's makes more sense to me over always advanced ???
i would not run a hot shot cdi with an advanced plate or keyway.
there are far more reliable ways to gain power than flirting with dangerous timing advances, IMO