CJoy's PB at Sonoma Raceway (1:39.6) - July 4, 2026

Finally sub 40's at Sonoma Raceway! Biggest change was the 8hp transmission. The acceleration is nuts. This trackday was hosted by SpeedSF. I run with the R*Crew guys. My car is a supercharged BMW E46 M3 with an 8hp automatic transmission. Other than that, it's your typical build: MCS 2 way coilovers, AP brakes, TE -37 18x10's, RSFuture aero, weight reduction, Pirelli take-off slicks, 4.1 gears, OS Giken lsd. Note: some of the throttle and rpm data log was wonky for some reason.