During a warm up lap at Hallett earlier this week, I was coming into a corner and during a downshift my auto blip activated and I heard a bit of a "pop" and my engine/drivetrain started to vibrate a bit. It's completely rpm dependent, makes no difference whether the clutch is in or out, and there are no codes. I can barely feel it at idle and anything below 2k is hardly noticeable. By 3k it's pretty obvious, and I haven't revved it any harder than that. It's not getting any worse or better, everything still functions normally and there are no codes. My first thought is that something let go on the clutch and is giving it an imbalance. It would have to be in the part that's connected to the engine, as I can have it in gear with the clutch depressed and it still vibrates. I ended up driving it to a friend's place about 20 miles down the road and it's still the same. Is there anything in the engine that could have let go and caused an imbalance without affecting performance? My first plan is to pull the transmission and look at the clutch, but if I don't find anything it about has to be something internal to the engine. It's my supercharged 2018 Roush. Any ideas?
