Mods: s1r33 3076r, external gate, poncams, 550's, uprated valvesprings.
Fuel: Bp 98
power: 307rwkw @ 20psi
useage: daily and track drifter
lifespan: 10 months at this level, 3 years with 270+
Failure: cracked ring no4 cyl, still drove fine just had a weird note from the exhaust
comments: had 270 for 2 years before failing after 10 months with 307, was about to upgrade to e85 but now will wait till I've rebuilt the engine