my car has a miss on 3/4 to full throttle a have changed the ecu,o2 sensor,crank angle sensor,ignition control maguol,and tested the throttle positioning sensor and i still have a miss please help.

 

could it be your fuel filter or fuel pump? maybe it pumps enough gas at less than 3/4 but then it can't keep up.. or maybe ur filters plugged a little?

 

One or more of your plug wires probably has blown a hole in it and when you accelerate, the increase in spark is causing it to miss. VERY COMMON! especially with afermarket plug wires. I have had it happen on (2) Twin Turbos, but not with OEM.

 

Plugs, wires, plug gap incorrect, dirty air filter.

 

just to let you guys know my stealth is a DOHC N/A

 

check the plugs man. I would also check the fuel filter i have a freind that put a ton of money trying to figure out what went wrong with his stealth and it was as simple as fuel filter