so check it out just went out there again and checked my compression and the shit is so low again..... wtf.... fresh hone and rings man..... when i put used rings in the car started and compression was good and this is the second time i use the npr's and the cars compression is shit.... 75,75,75,170 with them old used rings they were 220 across all 4 cylinders just smoked like shit from no sealingl.