Still new to this site my bad on last post.......anyways the spudder happens at 40mph but only when I let off the gas and get back on it......had plugs,coils replaced and fuel injectors cleaned. Also replaced O2 sensors this has got me baffled.

 

Always post the actual codes. I picked up on your posts from the other thread with your "lean bank one" which I am guessing is P0171. That would most likely NOT be your 02 sensor. Your sensor is working fine by telling you it is sensing a lean condition. It would more than likely be a vacuum leak or leak from a gasket downstream from the maf sensor. I would check the vacuum hoses especially the pcv lines at all the elbows for any pin holes. Also, check all the gaskets around the throttle body and elbow including egr. Last resort would be check the intake manifold gasket for leaks. Never hurts to clean your MAF sensor and change your fuel filter for peace of mind.