So I just put on a PumaSpeed X47r turbo and I’m on my fourth revision. I should be at 26-27lbs of boost but I’m hitting inconsistent boost levels of in between 19 and 24.but boost will hold steady wherever it lands at. I hear a slight whistle when I start to get into boost that started the other day. I went under the car and tightened all the clamps and it’s still happening. I order a new boost control solenoid and a boost leak tester which should be here Monday. If anyone can give me any ideas of what to look at I would really appreciate it.