Okay well ive noticed this for a while.. i think ever since i put the intake on? Alright lets say im going up a hill and its in 3rd. The engine rpm's will rev down to about 1500 and it will use the boost to get up the hill unless i give it more gas to shift down or manually shift it down. I hear a ticking sound when the boost kicks in.. sounds like valves ticking almost? Its not knock i know that for sure because it sounds like a tick.