dan... 13.5:1 alchohol motor on boost. 8:1 AFR.. Fuck everything. I can dig up a formula that takes into account octane rating vs optimum cr.. too much cr and you have to back so much timing out to run right that you make less power than on same boost more timing less cr. It's like a bell curve and unfortunately for us 93 oct has a optimum of 9.3:1; if your motor is fairly efficient (decent quench area, etc..)... I've run crower cams on 4 400-550rwhp SR's with good luck.. guess just adding brian to the name makes everything better As far as deatchworks... they overheat man.. cut apart a 550 nismo or tomei.. it has twice as many windings on the coil as a deatch reworked 270 or 370. After about 6-7 back to back 4th gear rolls on the dyno they start leaning in AFR's quickly. Been there done that, won't sell them again.

martin
xat