Who's Superflow are you going to (GP's?)?
In my opinion, you can't really go into any dyno with the mindset that a dyno is going to read less than another dyno. The Superlfow hardware is probably closer to being correct, and if you are truely using the bike as a tunign aid, then it really doesn't matter what hp or torque the dyno says you made.
If you can tune the engine to the point that you cannot make any more changes to increase the engines torque or hp output, then you got done, what you needed to get done. The dyno could give you numbers in the units of cocoa puffs for all that it matters as long as it is accurate, repeatable, andconsistant in it's measurings of cocoa puffs. :geek: