I went and talked with my service advisor about installing this conversion on a new cummins. He first said it would almost certainly void powertrain warrenty due to ecm tuning/deleting. I then I mentioned it appears that this conversion is plug and play, emissions compliant and and requires no tuning. He then said if that's true it would not void the powertrain warrenty. I was surprised he said that. I figured he would say void void void no matter what. So advisor doesn't know what he's talking about or possibly some truth to this? Maybe depends on dealer. When I had death wobble on my super duty and asked him why this happens he didn't try to give me the run around, he said "junk parts from ford." So I have some faith in his word, but only just a little.
This damn cp4 seems to be one of the only major downfalls of the cummins. I can live with most other issues I think.