[loco816]

I have a 94 Cobra. It boggs at and above 4500 rpm. This happens whether or not I accelerate fast through the rpm's or slow. I have replaced plugs, wires, cap, rotor, ignition coil, mass air, tps, cps, fuel pump, and fuel filter. If you have any ideas please let me know. I am getting beat. Alot.

 

[streetsnake94]

Reset the timing yet? Make sure your balancer is not wobbly, and then reset the timing to 10* Then bump it up in 2* incraments until it feels and sounds right. DON'T PING!

Also remember to unplug the spout connector when setting the timing and replace it afterward. I say this because this is your first post and I don't know how familiar you are with working on the Cobra. Good Luck!

 

[94CobraPace]

Could be clogged cats?
Distributor not advancing. Put a timing light and make sure it goes up when the engine is reved. Spout could be unplugged.
Just some thoughts.

 

[BigPimpHustler]

my damn car pings at 10* 87,89, or 91 octane