No experance with the 5100s. I have used 4600s on a couple GMT400s and loved em.
Worked great for the light to moderate off roading i was doing and a nice ride on the street.
Maybe just reflection but #3 looks a little beat near the center?
A guy could always roll new main bearings in. Pretty easy at this point and not that costly.
Before the MAS should not affect running. Air leaks after the MAS make problems.
Check the PVC hose for a crack. DR side valve cover by the firewall.
Make sure your intake tube is tight and has no cracks or holes underneath.
If original intake gaskets, they could be leaking underneath
Pass side...
IAT and Ambient should be very close to the same when cold after sitting overnight before you start it.
MAS should read around your engine size in grams a second when hot up to temp and idling between 550 and 600 rpm
Both front O2 sensors new? The rears have no effect on how it runs. The rears...
I like it better for sure. I was in some soft sand a week ago and i really think AWD would have left me sitting there. Put it in 4H and pulled out. Forgot and drove 30 miles home!
Listening to vids over the internet is pretty subjective for sound. I can only think of 3 things that can make that sound. Rods/mains or a slapping piston but pistons usually quiet down when up to temp.
Check all the grounds you can find, At the engine, on the frame, under the driver's door.
A bad/low battery will cause a bunch of codes at the same time but so will a bad ground, BCM bad connection or going bad.
All them things you have shown can't possibly go bad at the same time. You have an...
If it seems to be running and driving fine i would check/clean all the grounds. Clear all the codes and see what comes back.
Did you recently have a dead battery?
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