Mambo #5 runs 124 without the N2O, at 11 lbs boost, 9% overdrive. I have pulleys every 5%, up to 38+%. Probably kick up the ratio a bit in the next couple of weeks. I'm also gonna put more water to the intercooler and build a fuel cooler too. I have never used the squeeze to win yet, but its there if required. P.S. I'm on the fourth season with this motor. When it runs in the mid 130s, then I squeeze and hope for 150..... Also picked up another jet, 19 Daytona dragboat with a setback pump, 6-71 blown 468, etc. Plans include either the 548 or 572 blower motors, or squeeze on the 572. WAHOO! TIMINATOR P.S. I have installed a lot of squeeze on props and jets, and have a bunch for sale. Read the Hotboat squeeze article from last year.