Not a screw up, they probably wanted some lower dyno numbers for a baseline so the upgrades he bought looked like they gave him more hp! Actually, I have heard that the "tolerances" for hp ratings on the black motors(5% I think) aren't as tight as they are for the blue motors(2%???). And the blacks were typically overrated while the blues underrated. Which is why I love the HP500 motor!Originally Posted by dgduck13
I second talking to Tyler, very honest guy that builds real hp.