Well I've had my timing adjuster on for about a week ago and everything is great no pinging at all or anything but what I'm worried about and its kinda puzzling me is that i'm not sure if the guy that put my Under drive Crank pulley on at 10* stock timing. I got my car dynoed last week and i figured 16* on 93 octane should be perfect. Ran the dyno and put down 244.20whp and 281.58 Ib, Thing that got me is It said I was runnin rich with A/F curve going from 3k-3300 right at 13:1. Then from 3300-4k it gradually went down to 12:1 then 4k-4.5k gradually went down to 11.5:1 then from 4.5k-5.k gradually mad it back up to 12:1 then 5k-6k stayed steady at 12:1. The guy at the dyno said I'm rich so he asked me to give it some more timing so I bumped it up to 18*