Yep just about right on..here is what the Mortec website says about this;DriveWFO said:I think it's 8 jet sizes.
http://www.mortec.com/carbtip1.htmMortech.com Website said:Many tuners will automatically remove the power valves and use a "plug" thinking this is the "hot" ticket. However, if the power valve is removed and plugged, the main jet size must be increased 6-10 jet sizes to make up the required fuel amount lost by the removal of the power valve. In addition, when the power valve circuit is plugged, the part throttle fuel economy is worsened and may become overly rich. Plug fouling may become a problem at part throttle.
They make those... it's called EFI. lol.i've wondered about an electronic tuneable power valve , ,, do a feed back from an O2 analyzer to control it , , etc etc