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I had read a few other posts similar to yours and it seems that the low pressure fuel pump will set all those codes if it isn't producing enough pressure. I have no idea what the releationship between the low pressure pump and DPF is but in all the cases I have seen the LP pump seems to fix the...

Will that set a code? will this mess with the DPF or cause any long term problems? I plan on getting an H&S miniMaxx and a DPF delete pipe when i can afford it but i have a family trip in a few weeks and would love a little better than 12mpg I seem to be getting now. Thanks, TJ I can afford...

Is the increased mileage that some are claiming come from removing the DPF and EGR/cooler system or is it from the programmers. I know H&S is supposed to come out with a tune for the XRT that alows you to leave everything hooked up but if MPG's are going to stay the same then I need to do some...

Shasha, I am pretty sure that our problem is the same. Everyone that I have found with this problem have all had diiferent boost levels that correlated to the size of their injectors. Same problem but stock injectors 30psi, same problem 80hp injectors 40psi, go to 150hp injectors and no more...

It's not the harness, this is all boost related whether it is not getting enough or the ECM seeing too much.

Cerberusiam, One thing both of our trucks do that makes no sense is even with no electronics or boostfoolers, the truck will cut fuel and buck and surge at wot and then may or not throw an overboost code. All the trucks I know just throw the code and it doesn't seem to do anything to the truck...

I just want to be clear the y-tech would show boost rising all the way to 43psi and the jump straight to 51. example 1,2,3... 40,41,42,43,51 This doesn't make sense not a single digit from 43 to 51 just jumps straight to it. It like the op-amp for the signal goes haywire when it hits 43psi(5...

I think we got this figured out. The diesel tech who work on my truck actually bought it so I got to talk to him for a few hours today. He says the y-tech is showing the boost jumping from 43psi which is max boost the MAP can show to 51psi which is impossible and with the boost fooler on it...

Your right it is 45psi. Funny thing is that if I removed everything but the smarty it sure was easy to set the overboost code. And another weird thing is the tech that checked out my truck said he could see 51 psi from the ECM. I told him the Map sensor could only read up to 43psi and he agreed...

One thing interesting that the tech did tell me was that the built in boost fooler from the Quad X2 Race was not doing a good job fooling and the ECM didn't like it, but the stand alone boost fooler from Quad worked fine. I never got a chance to test it out but I am sure I have used that...

Keep in mind that if you go with some 90-120hp injectors your boost will go up but whatever the electronic issue is, it will still be there, just not as noticeable. This could be a problem that is just hard coded to our ECM's, maybe if you could get an 07 ECM and make it work on your truck it...

Went to the dealer today and I was surprised that they actually had the Y-tech diagnostic system. I wanted to be there when the checks were being done but wasn't allowed. The tech was in his early 20's and may have been a diesel genious but I have no way of knowing. I had mentioned the surging...

Source doesn't actually have the y-tech system but the Dodge dealership near them does and they are now sending people there that have complicated electronic problems.

I have some good news. I talked to Rip and Bill at Source automotive. They told me that some dealerships are getting a brand new y-tech or whytech diagnostic test system. It displays all parameters of your truck on one page and while driving around it will flash red on what ever input is out of...

I got word back from Marco who is the maker of the Smarty. He said that he is aware of a few people with 06's that have this defueling problem and has requested my dyno graphs. He said that he would do whatever he could to help and if anyone on the planet knows the inner workings of the ECM it...

Guys is there any way to get my hands on a manual that will explain all these electronics. I am very clear on how the engine works but Can Bus communications, PCI and all the additional modules makes it very hard to get a good overall picture of what all the ECM is looking at. I do computers...

Sorry Todd, thought you meant intercooler. You have any idea what an instument cluster would cost?

I have done everything I can do to check the ECM. The next step would be to order a replacement from the same place you got yours. I am going to see if this Quad Adrenaline can overide the defueling and if that doesn't work maybe try a TST box. If neither of those things work I will buy a...

I got a pm back from the guy who had a similar problem to ours. He installed 120hp injectors and now is happy. Because the injectors flow more per injector pulse your boost and performance will go up but it is just a workaround not a fix. The Quad Adrenaline box I ordered should work similar to...

Sasha, I have a Quadzilla Adrenaline and Pulse V2 on the way. It can stretch the injection pulse width and manipulate the Can Bus fueling, it also will display load %. It may be able to overide the ECM and force the right duration, if not it will at least display a lot of useful info and datalog...