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Can someone tell me if a 99 gt has a factory top speed limiter?I just had 373 gears installed recently and was out on a old country road and opened it up and at the top of 4th gear at about 125mph it acted like it was running out of fuel but no problem at speeds under 125mph also i have not put a programmer on it to correct the speedometer yet so the 125 mph is probly more in the 115mph range.Thanks Jason