[QUOTE=LXtasy;38237]Wow if showzones dyno reads LOWER than the normal mustang dyno. Wonder what numbers really good have been. Hmmmmm

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showzone calls their dyno the heartbreaker. they have told me on more than one occasion that it reads lower that 90 % of the mustang dyno's out there. i don't know it that is true but that is what was said to me.