I installed the SPE version DPK, install is the same for either, but the S&S return filter is a must and I have that too. I wouldn't jump on replacing the CP4 so early on, just put the PDK in and enjoy the ride. If it fails, you still have time to drive as it wont immediately put you OOS, but chances of failure with a DPK are extremely low. $400 vs $2000. Only tip I can give is get some 1/4 host and cut pieces then slice down one side and use them to keep the bolts for the upper intake from falling down. Will make it easier to remove.

 

I've got the same kit, with the "ExoFilter" option. I just haven't had the time to get 'r done. Too many irons in the proverbial fire, but I'll probably get around to tackling the job in late spring. The more I read about others' experiences with installing DPKs, the more confident I am that I can get it done in an afternoon (plus, all the tips about tools and such really have been helpful).

 

I have done 2 of them, but toss that SPE return filter and get the S&S return filter. The SPE is too hard to install and doesn't filter down enough to prevent metal from getting to the tank. If I do it again I will save some money and get the S&S since its $400 with the filter. Can hardly see the thing anyway.

I went SPE because I feel it is better made, the plate S&S make has a fitting on it that I feel could break off over time, or if someone were to lean on the line while working on the truck, and the lines look like they were slapped together from spare parts, but it works, gets the job done and after all this time I can't even see the darn things, so who cares what they look like.

 

I had already bought the SPE filter with the kit, but later started reading about the S&S filter setup. I might still go the S&S filter route, got plenty of time to decide. Thanks for the tip.

 

The SPE return filter does make a nice paperweight though. I keep it on my desk for just such a thing.

 

So when you google CP4 failure, in miles typical it says 100K ish, I have a 2012 with 172k on it. No issues other than a turbo replacement of around 99K. I have from time to time run a fuel conditioner but for the most part and not in a long time have not been doing anything but changing oil ( at 5k ish ) and fuel filters once a year ISH. So now that I've been reading and watching videos about CP4 failures and the aftermath plus the cost of trucks nowadays. I am looking to install a DPK by SS. My question is what are people seeing on failure in miles? How lucky I'm I to have made it over 170K? I have started recently running a fuel conditioner for lubricity to hopefully hold off a failure until I can get a kit and install it .

 

 

If I take the top off and remove the screen it works as a pencil holder too.