gdarb03ss

Just the longtubes and a k&n intake. Ordered the PCM mostly to take care of the rear O2 sensors being removed with cats. Could I possibly need to move my O2 sensors in my headers back, that is rearward of the motor

I just swapped my stock PCM back in and it may be too early to tell but after driving about 20 miles at varied speeds I have no engine light, idle is fine, and fuel mileage back up. I am hating to think my "custom tuned" PCM was the problem all along...

Idle seems stronger now but codes are back with the addition of a new one P0151-oxygen sensor circuit low voltage bank 2. So now i have a combination of P0300, P0151, and P0174... Stuck again. @D1SCSS I will try the brake cleaner around the gaskets for a leak

Thanks for the tips everybody, I just got the MAF and throttle body back on after thoroughly cleaning them. Idle sounds better, I'll have it back out tomorrow to see

haha yea same here

No cats, long tube headers with 3 inch exhaust through magnaflows. Custom black bear tune

Having serious problems locating my engine light issues. Truck is throwing codes for random misfires and bank 2 oxygen sensor lean. I have replaced all my plugs and wires as well as 2 new oxygen sensors. Had the crank relearn procedure performed hoping that would solve the problem, still nothing. Symptoms are rough at idle and terrible gas mileage. I am now looking for vacuum leaks and cleaning the MAF. Any help would be greatly appreciated. Thanks Gus