I’ve had 3 different Indy’s check my compression and all had completely different numbers but each had cylinders within 12%

So I plugged in my handy dandy obd2 scanner and took these screenshots of fuel trims.
1 is at idle ~760rpm and the other ~1060rpm

Also adding a shameless plug for my 2005 R53 (power mods if that matters: all JCW bolt ons except head, JCW 210 dealer map, 17% UP)

 

Fuel trims seem completely normal.
If you're chasing a rough idle look toward the harmonic balancer or motor mounts.

 

Thanks. Harmonic balancer has about 25k (gel filled) I’ll check the motor mount!

 

Did you find the problem?