Didn’t even use them
"Saw the KC turbo podcast w Jerrod from KDD and just left them on the shelf because it’s the other systems that need new coolers to keep the stock system flowing. So refresh the EGR cooler or back space it. Refresh the oil cooler. I think every 5 to 7 years the 6. 0 PS needs to be pulled out and refreshed. There are just so many O-rings that will leave you stranded if it’s not gone through. Those HPOP system o rings need refreshed. Also every new purchases diesel truck needs the fuel tank dropped and cleaned."