The smoke test will check for vacuum leaks the o2 swap will verify the o2s are good and the injector swap will check if a injector is clogged or failing for some reason
Yes the two closest to the engine. You can check them but I would still swap them if it is possible. I would swap the o2s and swap all the injectors from side to side and see if the code changes banks
I don’t think it’s a leak in the piping system because it would have a lean code for both banks. How bad is the leak at the header? Can you swap the o2 sensors from side to side and see if the code follows? No other codes?
They should have changed the compressor, flushed the system, changed the orifice tube or expansion valve whichever one you have, change the dryer. With it cycling every few seconds it is probably leaking Freon. Is it blowing warm?
I would start by disconnecting the intake piping and plugging the throttle body or tape it up. Also plug the pcv hose and vent hose. Then use a vacuum port to introduce smoke.
Holley and cobra jet manifolds drive fine without any issues you just lose some torque/ response down low. With a supercharger it will easily make up the difference very fast
Seriously doubt it. They have tried different oil filters with and without the bypass.high pressure and high volume oil pumps do seem to make a difference. If it was a lifter zddp would take care of it. If it was a lifter collapsing it would miss fire. Also I don’t know about anyone else but my...
If you are burning a lot of oil the pcv valve is not going to change that. If the pcv valve is sucking a lot of oil it is because there’s a lot of oil vapor in the engine and pcv valve is not going to change that. and the hesitation at 2k is not going to change from a pcv valve
If you’re talking about a coyote they will fit just fine. Same bolt pattern same port shape. They even use the exact same gasket kit and stud kit. It will bolt up to the head perfectly. The exhaust system might need a little modification.