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When you say "jet it up", are you changing the primary and secondary jetting? I currently have 75 in the mains and 78 in the secondaries....how many jet sizes should I go up with the 100 shot and how much more timing and jetting if I put the 150 shot to it, the system is the NOS Powershot. Should I be pulling my timing with a timing light and locking the distributer where I see fit or should I buy a timing computer.....money really isnt that big of a deal, swapping out chips instead of messing with my distributer seems easier and way more precise......any input on wich timing computer, I have all MSD now.

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When NOS guys say jet up there usually talking about the fuel jet in the NOS system, not the carb. If your carb. is jetted good now leave it alone, jet up or down the NOS system gas side jet