above 4500 or so the car begins to break up, but it isnt at any specific rpm.

ive converted to the Delteq setup, new plugs, new wires, not running o2 sensors, plugs are not fouled. fuel pressure is fine, i have NO knock/detonation.

i've been told valve float but from what i've seen, valve float doesnt cause a miss, just sort of falls on its face.

could it be something with the optical sensor in the opti? if it were, why isnt it doing it at every RPM?

 

anyone?

 

ttt....

 

check for arching that has been 90% of everyones problems even with new and hi-pro wires.

 

are you sure it's a miss... my car does the same thing... and it's false knock We start breaking down around 4K or so... the louder it gets the less I get from the throttle. Poor car... time to put the exhaust on.