I just perform a compression test after using EPR or BG's Engine Performance Restoration, this **** works as described and as advertised! Say goodbye to the coked oil on the inside of your oil supply line to turbo! Cylinder #1 gained 15 psi, #2 gain of 10 psi, #3 gain of 7 psi and no gain for #4. While this might not look like a serious gain on all cylinders consider the fact that my cylinders are much more even across the board. I wish I had someone to do a video recording me when I was draining my oil, it had black swirl mark in it that looked like marble tile in the oil as I was pouring it into a storage container. That would have been jaw dropping for you guy's!

Tomorrow I'll see if I can pour it out and back into the storage container to see if I can show that black stuff.

Before BG's EPR
1. 150 psi
2. 155 psi
3. 158 psi
4. 170 psi

After BG's EPR
1. 165 psi gain of 15 psi.
2. 165 psi gain of 10 psi.
3. 165 psi gain of 7 psi
4. 170 psi no gain.