Issues with DPF delete

[2wheelhopper]

So I decided to do a DPF delete. I have an SCT Xcal3 and had a delete pipe installed into the remaining factory exhaust. I decided to have a shop install the delete pipe after looking at the rusty bolts. The issues started with the sensor closest to the rear of the exhaust not coming out of the factory cat. I think it is an EGT sensor.

So when I picked up the truck with 3 of 4 sensors installed, I went to load the delete tune into the truck. I got a unsupported, or something, message.
Then my truck would not even turn over. The exhaust shop guy, who I have known for 20 years, said he started it right up and drove it out of the shop. I spent the next 2 hours on the phone with SCT updating and troubleshooting trying several failed attempts to program the truck and the tuner could not program the truck. We finally got the tuner to work and the truck to start, with a stock level, custom tune that eliminates the need for the EGT sensor. It also is running with a high idle. Anyone else had this issue? I plan to get a new sensor tomorrow.

One important tidbit. I had and Edge Jw/attitude hooked up to the truck most of this time. Prior to the last time we were finally able to program the truck I disconnected the Edge. I am not sure if this was preventing the SCT from working or not. I kept the Edge at stock truck settings. I wanted to leave it connected to use for the gauges and as a turbo timer. Is this doable?

[RUFFSTUFF]

I am not that familiar with delete pipes, but there are sensors left in the exhaust even after installation of the delete pipe?

[green037.3]

Yes it is doable to leave your edge in as gauges, not sure about turbo timer though? I leave mine in as gauges but when I installed my H&S the first time I removed the edge loaded the tune I wanted then plugged the edge back in to the obd2 port and set it to stock and sett all my warnings the edge will not shut the truck down once it meets the warning level but will flash on the screen as before.

[2wheelhopper]

Originally Posted by RUFFSTUFF

I am not that familiar with delete pipes, but there are sensors left in the exhaust even after installation of the delete pipe?

SCT likes to have the sensors left in. That is why there are delet pipes with bungs. I personally think it is a good idea. That way your tuner/programmer can use those sensors to read EGT and you don't need an aftermarket gauge. That is one feature I like about the Edge product.

Originally Posted by green037.3

Yes it is doable to leave your edge in as gauges, not sure about turbo timer though? I leave mine in as gauges but when I installed my H&S the first time I removed the edge loaded the tune I wanted then plugged the edge back in to the obd2 port and set it to stock and sett all my warnings the edge will not shut the truck down once it meets the warning level but will flash on the screen as before.

This is what I was hoping for. I'll try one of the performance tunes once I replace the missing sensor.

[Big_Smokey]

6.4 trucks don't need aftermarket guage for egt. Pyro is built in. Correct me if I'm wrong.

[2wheelhopper]

My understanding is that is one, or more than one, of the 4 guages that are part of the CAT/DPF assembly. If those are gone then an aftermarket one has to be installed. I may be wrong, but 3 of the 4 gauges are directly referred to as EGT gauges.

[RUFFSTUFF]

Originally Posted by 2wheelhopper

SCT likes to have the sensors left in. That is why there are delet pipes with bungs. I personally think it is a good idea. That way your tuner/programmer can use those sensors to read EGT and you don't need an aftermarket gauge. That is one feature I like about the Edge product.

IMO, the only EGT that matters is the pre-turbo one since if you delete the CAT/DPF there is nothing there you need to monitor the temp for. That pyro is unaffected by the installation of any exhaust (pre-turbo )

[RUFFSTUFF]

Originally Posted by 2wheelhopper

My understanding is that is one, or more than one, of the 4 guages that are part of the CAT/DPF assembly. If those are gone then an aftermarket one has to be installed. I may be wrong, but 3 of the 4 gauges are directly referred to as EGT gauges.

Depends on the tuner I'm sure.

With the Mini Maxx you disconnect the 3 sensors (and the extra connector) and that's how you roll. Totally simplifies the aftermarket exhaust installation since you can disconnect them at the connector (leave them installed in the stock exhaust) and not have to worry about breaking sensors trying to remove them.

I can see having to remove and re-install sensors, tuning, etc, can lead to the problems above.

[K1LLsW1TchEd]

my truck stayed in high idle until i replaced the last 2 sensors on the exhaust. Eric from innovative said that the you need all of the egt sensors functioning or else your truck will high idle. problem was solved for me

[2wheelhopper]

That did the trick. I replaced the one rear sensor Saturday and now the truck runs fine.