Steve Turner
Former Editor, 5.0 Mustang & Super Fords
December 15, 2010
Photos By: Derek Perez

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On The Dyno

StockWhippleDifference
RPMHPTQHPTQHPTQ
3,000167.18292.67216.18378.4449.0085.77
3,500214.15321.34269.12403.9554.9782.61
4,000257.14337.63322.80424.5465.6686.91
4,500298.69348.61371.71433.0373.0284.42
5,000326.23342.68415.50436.3289.2793.64
5,500350.10334.32459.20438.47109.10104.15
6,000353.92309.81490.39429.24136.47119.43
6,500363.74293.91514.53415.76150.79121.85
7,000n/an/a525.99394.62n/an/a

Things don't always go laboratory smooth for us. We were on the cutting edge of the FRPP/Whipple kit and ended up starting out with a preliminary ProCal tune with an aggressive knock sensor profile. With this first program and Magnaflow mufflers as the only other mod, the car made 505 at the tire. However, FRPP wanted us to try its final calibration for the story. Naturally, Lethal had already started modding the car, and had reinstalled its off-road X-shape crossover, so there is more than one change going from baseline to the final 525-rwhp number. Still it gives a good idea of the capabilities of this kit, which added triple-digit gains from 5,300 rpm on.