Everything I thought it may be you have checked. The only two I can think of is maybe the belt tensioner has gone bad or perhaps the oil leaked out of the SC after it was changed. But I doubt the last on.
Sorry not much help.
I also replaced the tensioner a couple years ago. I don't think the oil in the supercharger would cause it. It did this before the change and after without any difference or resolve. I can't think of anything else that could cause it other than the throttle body. I'm open to all suggestions before I drop a bunch of money into a new throttle body.....
I recently got an R53 that has had mods done and now I am getting a chirp sound as well however it seems to be when I give it gas. At idle, very faint. Guy I bought it from put new tensioners, new belt, 17% pully reduction and new engine mounts.
Any help for a paranoid newbee would be much appreciated.
I don't know but buy a mechanics stethoscope, pop the hood & rev it up. You might not know what's going on but you might be able to pin point where the sound is coming from to make it easier to diagnose. However if you want my 2 cents it might be the supercharger or more specifically the metal layer covering the blades. Maybe, maybe not, idk.
