Funny, I had a bit of a knock in the rear left, mainly noticeable when backing out the driveway and when cornering at different times if you listened and concentrated enough lol. Was convinced it was wheel bearing or CV so dropped it off at the mechanic. Turned out the centre bearing was chewed...
Mine was throwing crank angle code on hot starts, didn’t want to start & ran like a pig. Weak starter was throwing crank angle out. Could drive all day on a cold start.
HID work great in the projector light, the ones with the ballast built into the replacement dust cap. 4500k is plenty & still white light, correct adjustment is both beneficial to you and other road uses.