Lightning, Harley-Davidson F-150, Roush F-150 & Saleen F-150SVT Ford F150 Lightning, Roush, Saleen and other performance F150's
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He's full of crap, there is no way he is running a 12.8 with just taking air out of the tires, a stock '01 and '02 Lightning runs the quarter mile in 13.9. Is he using the factory installed Goodyear F1-GS unidirectional tires? Or did he put on slicks? Slicks could give him a faster time, but he still won't run a 12.8 with a stock Lightning. He is telling you a bunch of BS!!
IF he is claiming 400 HP at the wheel, ask to see the dyno sheet. Chances are that he doesn't have one because he never dynoed it. He is making numbers up. For the 12 seconds, I bet he is guessing a ¼ mile on some side street and timing it whith his watch.
I frequent the local dragstrip and I have heard two people say that they are getting 400 horse at the wheels with just a chip! They are running high twelves. Your friend is full of it though. You just ain't gettin a 1.1 second improvement by dropping tire pressure in radials.
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