We made the 578 but it quit making power at 4800. The following weekend we went back to the dyno to find out why. I was thinking it was the intercooler so i bypassed it and back to back runs only made 525. The only difference was the RPM. Weeks later is when we put the 80mm on and it made the 740 number. It made the 740 number at 5600 but we had other problems that made us stop at 5600.