P1451 and the DPF Delete Kit from HS Performance

6.7WithNODPF said:

Ok I am currently setting the code P1451 and running regens constantly. I am rolling white smoke out while in regen. I had put around 6000 miles on the DPF delete kit from HS Performance. Yes, I have all sims installed, with the pressure box, and running a edge with attitude. From everything I have read this code is coming up from timers in the programing of the dpf software. I have emailed HS about this problem and I am currently waiting on a reply. I have also read that the XRT downloader they sell will allow you to turn off the DPF filter. What I am upset with is I was sold a kit that was promised not to have a regen cycle. They still currently show on their website that this kit will not regen. If I am instructed I can buy an XRT or take my truck to the dealer to clear the code. Taking it to the dealer sounds like it will be a fix for about 6000 miles or until the timers go off again. I think HS needs to be selling the XRT at a very reduced rate. I am curious to know what you guys that have had this problem found to be the fix in the end.

Click to expand...

I had the same issue a while back...delete kit combined with an Edge w/Attidue. Truck ran great for a while (3000km) then went into constant regen...lots of white smoke. It would come out for a few seconds and then right back into a new regen cycle. Drove me nuts.
In working through the issue with the techs that sold it / installed it...we determined that it was an issue between the Edge electronics & the DPF delete electronics...they just don't work well together, particularly with the Attitude. Apparently it's not an uncommon issue. My understanding is that the Edge w/Attitude is made to work primarily in trucks with a DPF.
Fortunately, the shop that sold me my stuff returned it all and exchanged it for the XRT kit. Since then, not a single issue, and the truck runs WAY better than it ever did with the Edge! I don't know if you have that option with your shop, but you should at least ask.
If it's not an option then definitely follow James (RSD) and MATTIAC's advise a...check the sims for moisture and swap them out for 330s. You probably should do that asap regardless...stop running crappy air through your engine until you resolve the main issue (Edge w/A + most DPF electronics / sims = constant regen).

Good luck!

If you purchased from us anytime this year, you will have the correct 330OHM resistors. There are 2 styles of sims, but they are all the same internally. I would check them all with a meter, and if 1 of them is out of spec, we can send you a new one to fix it. There are a few flashes out there that can cause fits with the DPF delete, mostly manual trans flashes. Either way we can get you fixed up.

****Note****
The one thing I cannot stress enough is that every single truck will act differently! Every call I get guys want to argue with me about what worked on "their buddy's truck" and what I am telling them to do is wrong. You cannot take what works for one guy as the gospel for all trucks. Each truck may require a different setup.

If your truck is going into regen, 99% OF THEM TIME IT IS DUE TO A PRESSURE SIM. THAT IS WHY WE DON'T SELL THEM ANY MORE. There are only a handful of trucks that will require the pressure sim, and ONLY IF THEY ARE USING A JUICE W/ ATTITUDE OR A PMT TO BE CODE FREE, AND ARE CLEARING CODES EVERY SINGLE STARTUP.

Here is the test to see if you need the pressure sim! Plug the factory harness into the factory pressure sensor. Turn key on, let the juice/pmt clear codes, then WITHOUT TURNING THE KEY OFF, START ENGINE. Go for a drive, no less than 5-10 miles. If you get a CEL with the code P244a, as well as the overhead stating "catalyst full", you need the sim. If you get no CEL or a CEL WITHOUT the overhead message, you don't need the pressure sim.

If you follow this as a guide as to when to use/not use the pressure sim, you will save yourself many hours of headache. If you have questions, email me!

-Casey

6.7WithNODPF said:

I do not believe the problem lies in the edge. Edge as a lot of tuners are simply changing fuel, timing, and some turbo fooling. The XRT has an opintion to turn off the DPF. Now I do not know the extend of this feature and what is meant by turning the DPF off. I believe that is the reason your shop returned the edge for you.

Click to expand...

You're entitled to believe what you want...but you missed the point completely. What Casey said in the above post is as true as it gets...none of these trucks appear to react the same. We can only share our personal experience and hope it helps someone else.
In my case, the manufacturer of my DPF delete readily admitted to me that their sims quite often did not work well with the Edge w/A. It's not that there's anything wrong with the Edge w/A (my returned Edge is working great in another truck without a DPF delete) or the DPF sims...it's just that more often than not they weren't compatible in the big picture. A by-product of trying to get 2 companies' electronics to provide a single solution.
From all reports, H&S has the best solution with the XRT & their sims...one company providing a single solution, no mix & match. It definitely worked for me.
As long as you continue to run the Edge w/A with another company's sims, there are no guarantees that this issue, or others will not return...the Edge only clears codes, it doesn't eliminate them.

Your truck, your choice.

Good luck with that.