5/7 Jim Cooper's PS1000 triple Skidoo asphalt racer, dialing in new MSD ignition last Friday had a bad timing pickup so were waiting for a new one. Before the pickup went bad, we had Megatron fuel flow inconsistencies  (solid mount  twins are usually the worst,  solid...

When I bought the SF901 dyno 20 years ago, stock and race sled engines were less than half the torque and HP of what we're seeing today. The Superflow 901 absorber is capable of  controlling 1000 HP engines, but the 1986 sales  literature described how the...

305/1 Dynod a second new Hayabusa with Yosh bolton mufflers belongs to a riding pal of the one I tuned yeasterday, this one made 157.4 RWHP after tweaking the identical map but midrange HP was better than yesterdays, guessing that cam timing is different by a few...