I've run my car on two different Mustang Dyno's. both with different hp/tq results. The first time I ran they couldn't calibrate the idle RPM setting. Anyways, with a DHP 1.0 PCM the speed limiter is removed so you can run as fast as the car is capable of. Note: I found out that my car's electronics would shift the tranny to 4th even though the shifter was in "3" once the redline was met.
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SLP CAI, DHP, 3.4, 180° stat, Trans cooler, Random Tech DP, Borla cat back, KYB's, bitchin' paperclip mod.