I do still have the smog pump, half hooked up, the hose that goes to the mid pipe is not connected, if the smog pump will not be a problem with emissions I would like to remove it, thats the only reason it is still on there. Either way, what is the best solution to test this theory out, remove the whole unit, plug a certain hose off. What do you guys think.

 

remove the crossover pipe from the back of the heads, and thread in two 5/8"-11 bolts that are approximately 3/4" long.

 

I recal having the exact issue until got two mufflers installed. I think the turbulance factored into the issue somehow going to WOT, and my tune/ecm had a glitch in that particular area.

If I can reacll, the CAI , offroad exhaust and tune were just not corresponding at 4400rpm-4,700 rpm


removed the chip and it never happened again. Tuning takes some practice and its not perfect at all times, so you have to kinda error and trial. Mine took 6 hours and two days at the shop , some sooner. Best $500 I ever spent


- TPS can have a flat spot and do this as well. Check the voltage and makes sure its goes up smoothly as you go to WOT, car off key on, if it glitches, or fluctates, toss it.

*timing wise, no , wouldnt look there yet unless your retarded to like 4 or 6 degrees, id have it at 10 min.


-Carbon, through the EGR channels and on heads can also do this, Diamond Chrysler Dealerships have a Can OF Combustion Chamber Cleaner(THATS THE NAME), spray it in the throttle body, remove the plugs, spray it in the holes, and reinstall.

This was specifically designed by thier engineers to fight off the 4.0 carbon issues that caused misses and valve issues and sent them hurting on warranty claims for engine rebuilds.

The stuff sits two hours, and foams up, turning all the carbon into a non corrosive light colored thin liquid.
This is not your parts store Sea Foam , cost $25-$30 for one can and will treat two v-12 engines.


When you start your car, floor it and look out for the Fire Department

 

Thanks for all the help, I will look into several of the issues listen from everyone who has helped out.