engine shuts down
 

I have 565 w/whipple motor coughs twice then dies.It only does this at 4500 rpm or higher.new msd coil checked all wires and grounds.fuel pressure does not drop off.New plugs cap rotor.

You might try no ethanol fuel.

Need help had this problem all summer.

check batteries to make sure they are still good, maybe you running to rich as well.