517bhp and 378lbft torque from
485bhp and 355lbft torque
Up 32bhp and 23lbft from its new manifold and 75mm t'body.
New injectors needed as 620's previous maxed out over 5K rpm
as old dyno belowas ref,
Cams drop in next. and re dyno again to see.
Big thanks to James & Kev @ Custom Code today.