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No car just lost power in high rpm. Fuel pressure fell off at high rpm because holes in the lines in my tank.also got a adjustable fuel pressure regulator to turn my fuel pressure up because of my intake and new xpipe by bassani.
i also have the same problem with my 98 cobra. upper rpm it starts missing badly. i pulled the tank and pump and found the top piece of the pump assembly was loose (the screws backed out) tightened screws and al better.