Grdsman
Member
Ted
You can tell if your exhaust brake is working by looking at your Turbo PSI while going downhill. When it is working, you will see the PSI read about 4 PSI. As you know, when going downhill with your foot off the gas, you would normally read 0 PSI. The 4 PSI that you are seeing is actually back pressure.
You can tell if your exhaust brake is working by looking at your Turbo PSI while going downhill. When it is working, you will see the PSI read about 4 PSI. As you know, when going downhill with your foot off the gas, you would normally read 0 PSI. The 4 PSI that you are seeing is actually back pressure.