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My F7 is lacking performance right now and was wondering what you guys thought.. The sled idles fine and drives okay at 1/4 throttle but when I give it and the rpm's start to climb it falls off and the rpm's get down to 4700 or so.. I have gotten my smart valve changed and compression is perfect at 145/145...My peak rpm is 7800-8000 but it falls off before I can reach it...Max top end is 69mph thru a flat open field...
 

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Lacking performance.....? I'd say you have some mojor issues there. Have u had it to the dealership? What did they say? I would take it there and tell em i dont want it back until it performs right.
 

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Just read the thread from snowblind "Power Valves Black Magics Veiw". That may be just yer problem, the power valves are sticking or the servo cables are disconnected...
 

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RE-CHECK your smart valve,sounds like the white disc is restricting fuel flow
 
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