Low Power / Low Boost - On Deleted 2015 H.O. Cummins 6.7L

[2015MegaLong]

Someone give me some ideas.

2015 Ram 3500 H.O. deleted, with low power/ low boost.

Pulling a grade, it will only peak at 20 psi and feels sluggish.

I am used to peak 35ish, no problem.

NO CODES!

No heavy smoke, fuel rail pressure meets command, and VGT follows order perfectly.

The grid heater is clean and clear.

With no change, I used my other good-running truck to swap MAF, IAT, MAP, and EBP.

I performed a boost leak test, which holds 35psi with no issue.

Inspected CAC and is clear of any obstruction.

OEM Fuel filters and air filters are new ago.

EGR Valve is blocked off.

I've hit a wall and could use suggestions on moving forward.

 0 Comment(s)

[AK Bob]

Someone give me some ideas.

2015 Ram 3500 H.O. deleted, with low power/ low boost.

Pulling a grade, it will only peak at 20 psi and feels sluggish.

I am used to peak 35ish, no problem.

NO CODES!

No heavy smoke, fuel rail pressure meets command, and VGT follows order perfectly.

The grid heater is clean and clear.

With no change, I used my other good-running truck to swap MAF, IAT, MAP, and EBP.

I performed a boost leak test, which holds 35psi with no issue.

Inspected CAC and is clear of any obstruction.

OEM Fuel filters and air filters are new ago.

EGR Valve is blocked off.

I've hit a wall and could use suggestions on moving forward.

You have already tried all the things I can think of.

Hopefully, someone will come up with other suggestions.

I have attached the reference material that I have available for low-power complaints.

You are welcome to take a look to see if any of their additional suggestions will help.

 0 Comment(s)

[2015MegaLong]

After more than a week of searching, I figured it out an hour after the post!

There is something plugged into my exhaust.

I disconnected after the downpipe, and she came back to life!

All I have is a 4" resonator and a custom tip.

I'll get it pulled off the truck and figure it out.

 0 Comment(s)