Unit could be right about not short shifting the Cobra. I never drove one, but after looking at dyno readings and ratings, and charts that you would loose less net power by shifting earlier than Redline.
What I did (May be wrong, but noticed a diffrence in seat of the pants and impromptu races) is take the RPM Range for which you shift at and the power produced at the starting RPM of the next gear, and averaged it out in increments and varations of the RPM shift points.
For example if your car builds its peak power at 6400 RPM at 270 HP, but when you shift takes you to 4300 RPM with 220 HP. While if you shift at 6700 RPM with 260 HP, it takes you to 4800 RPM wich has 237 HP.
See, your average power output is higher. But this might be diffrent in reality, you know how things go with Paper VS reality.
Seems to of worked for me.
I know my use of grammar wasnt exactly up to specs, nor is my use of terms, but I'm starving and its dinner time. So if you would please excuse me.
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64 1/2 "D" code Red Mustang Coupe. 289, C4, Mallory duel point. Ported & Polished 65 heads shaved .01 with 351 valves, 11:1 comp, 1.7:1 rockers, blue wolverine lumpy cam, modified 4100 Hipo 4 barrel. GT Apperance pkg. And to many others to list
2000 Perf Red Mustang GT. 5spd. BBK Underdrive pulleys, Flotech off-road H pipe. Hurst T-Handle, 40 series Flowmasters, Steeda Tri-Ax. Ordered 4:10's.
64 1/2 red 6cyl coupe. Future resto.