One more time, Powerdyne dyno numbers
 

A few people on this site mentioned that I might have spark plug blowout on my last dyno and they were right. I couldn't rev past 5700rpm so I replaced the plugs, gapped them to .035, and pulled right to 6200rpm. Best run of three:

400.3rwhp/386.3rwtq SAE corrected

Still using the 6lb pulley, 7" crank pulley, and powerpipe. Not bad for the little underachiever Powerdyne. :)

Cool to hear this!!!!!

Now do you care about breaking youre internal belt????

Because of Powerdyne's reputation, I do worry about it a bit. I am still under warranty until December though. Powerdyne has a 2-yr warranty. I will most likely keep the 6lb pulley on there. I don't feel like replacing the belt and bearings just yet. I am still planning on upgrading to the XB-1 sometime next year though. If it breaks before then, I will definitely fix and upgrade to the gear driven unit sooner. If I can hit 400 with this little 800cfm blower, I can probably do a bit better with PD's 1200cfm blower.