HELP!
I have a 93 Mustang fully set up for the track. Stock bottom end with twisted wedge heads, intake, cam, MSD 6al, MSD coil 76MM C7L MAFS and so on...

The problem is this....

After three or so laps on a given track once the engine has heated up, under WOT it will cut out intermitently. The only way to get the car to get it back is to remove the load by disengaging the clutch and feather the throttle quickly. She comes back but not at 100%, she lacks power and I can smell unburnt fuel. The plugs don't seem to be fouling. I have them gapped at 45.

I have replaced EVERYTHING. such as:
I took the MSD box out of the loop and ran stock coil etc.
replaced:
Coil, Distributor, tfi, map, temp sensor, wires, o2 sensor, fuel pump, MAFS,
Fuel pressure regulator, cpu, chip, you name it I replaced it. Still the same ol problem.

Can anyone help PLEASE????

Thanks in advance.

 

This is just a wild guess, in reguards to unburned fuel and loss of power, you might have a voltage drop somewhere in the ignition. As temp. gos up in a conductor, resistance gos up, (higher impeadance) resulting in a voltage drop(a reduction in juice flowing throught the wire)

Maybe plug wires to close to headers or maybe need a higher grade of wires
Again just a guess, you probably have ruled this out already

 

Thanks for the post.
Yes, I have looked at this but not thouroghly. Perhaps this is worth another look.

B

Any other ideas guys and gals???