Year: 2007 B7 RS4
Engine: OEM BNS 4.2 FSI, JHM tune for Milltek exhaust
Mileage: 98,348
Results, fuel pump fuse pulled, cold engine:
Cylinder 1 - 145 psi compression, 0 percent, e.g. 100 psi @ 100 psi
Cylinder 2 - 143 psi compression, 1 percent, e.g. 99 psi @ 100 psi
Cylinder 3 - 140 psi compression, 4 percent, e.g. 96 psi @ 100 psi
Cylinder 4 - 152 psi compression, 0 percent, e.g. 100 psi @ 100 psi
Cylinder 5 - 145 psi compression, 6 percent, e.g. 94 psi @ 100 psi
Cylinder 6 - 140 psi compression, 4 percent, e.g. 96 psi @ 100 psi
Cylinder 7 - 145 psi compression, 1 percent, e.g. 99 psi @ 100 psi
Cylinder 8 - 153 psi compression, 0 percent, e.g. 100 psi @ 100 psi
Borescope looked good in each cylinder.
Seems like a fairly healthy engine.