Just thinking out loud.. I wonder what would happen if you remove the NOX and DPF but reinstall ALL the sensors and leave the rest of the truck stock? The truck won't see the pressure increase from the DPF starting to fill up so it might not go into regeneration, has anyone tried this?

 

I have wondered the same thing. But I think there is still an emissions timer of sorts. DPF-R (GearBoxZ?) had/has a device that plugged into the obd port. You had to cycle a switch and wait for a green light before starting the truck. To my understanding it reset the timer in the ecm and required all sensors to be in place. I haven't been to their site in a long time, but the last time I was their they only had a device for the 3rd gen trucks.

In principle though, I have thought about that quite a bit when I researched that pressure sensor. It seemed like all that was holding the regens back was whether or not there was a difference in pressure.

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So the timer triggers a regen, the ECM looks at the pressures and says "I don't need to" or it starts the regen then looks at the pressures again and says "regen completed" Either way there would be next to no regens and if there were occasionally they should be of short duration. Just trying to understand how the truck thinks. Lets pretend the truck only goes up hill in the mountains towing 16,000lbs in 90degree weather, it should never need a regen so something must tell it not to and that must be the pressure sensors.

While I like the "clean" look giving up warranty was hard to choke down but this may be the answer for the next one, I mean why make a pipe with bungs in it if you are just going to plug them up? I would like to hear peoples thoughts on this.

 

Not sure if this will help or if it is applicable, but I was just researching the regen process and the pressure sensors and came across this PDF: ISB 6.7 Familiarization. It has some good info.

I think the bungs were included due to the "old school" way of deleting without a programmer - such as with the DPF-R electronics device from GearBoxZ - which required all sensors to be in place except for the pressure sensor I believe. Since the delete pipes are the same from 2007.5+ (to my knowledge), it could be just an inventory thing depending on the manufacturer. So rather than stocking pipes with and without bungs, some chose to just manufacture with the bungs in place. That's my theory anyway!

 

Thanks for the link I'll have a look tonight. The bit about the bungs was said tongue in cheek.

 

^ must be an English teacher lol.