I've noticed my primary turbo feels a little lumpy if I floor the throttle,and if I floor it in 5th gear I'll get a brief hesitation that feels like fuel cut about 3.5k. Any ideas? issue doesn't occur if driving on up through the gears-so primary range problem only-thats making me think o2 sensor beginning to go. New plugs gapped to .65 in it and inspected coils for cracks and nothing apparent. Also possibly MAF or knock sensors. Other options are leaking DV or hose cracked? Anyone had this problem??? Getting no CEL at all on it