Originally posted by Thump
Thats what I though SFO....
My 02' YZ426 showed about 46 rwhp on the Dynojet here with 29.15 ft lbs of torque.
Dynos are all different though... Yami says my 426 does 50, the mags say 49, Pro Circuit says 47 with their Pipe on it... I came up wit 46, bone stock on Texaco Premium unleaded. But mine is a YZ but it might help a little...? I hope.