I decided I'm going to get the InMotion ECU flash a couple people have gotten, but I wanted to get some baseline numbers of what the engine's putting out in nearly stock form, so I took it to the dyno yesterday. We pulled off 3 consistent runs in 3rd gear with the TC locked, with the peak numbers averaging 160hp and 340 ft-lbs, at the WHEELS! I couldn't believe it! I know there will be a ton of skeptics, and I'm one of them. What's important to me is not absolute numbers, but that the ECU flash actually improves on base numbers.
Particulars about the vehicle include:
05 Sport
23k mi
glasspack silencer
ORM
EHM
CAT2 fuel filter
unplugged fuel heater
brand new Mopar air filter
no F37 or F31
Full tank of ULSD
Full bottle of Redline Diesel Fuel Catalyst (way too much, I know. I spaced out when dumping it in like Techron in a gasser)
bled the fuel system just prior
Rotella 5W-40
tires at 40psi
The tech tried to get the pull to start at as low an rpm as possible and with as much throttle as possible without unlocking the TC. This meant taking o/d off and letting it shift into 3rd at 38mph. Starting at about 1650 rpm he would roll onto full throttle in about 1-2 seconds, having it floored by 2000 rpm. Any faster rolling it to the floor would just cause the TC to unlock and rpms to surge. This may be why the torque peak and power peak were both at 2400 rpm. It's interesting how different the curves are from the graph on Jeep's website.
There was an LS1 powered sand rail there just before me that I saw put down 310hp/320 ft-lbs, so the CRD out torqued him by a healthy margin. When I first got to the shop no one really paid much attention to the CRD, except to ask if it was really a diesel. Probably expecting it to lay down some TDI Jetta-like numbers. The first run really turned some heads, and had people coming over to look. When the second and third runs confirmed it, there were some stunned people asking what it was rated at. The techs were surprised that it exceeded the rating, saying their dyno was notoriously stubborn, and seldom exceeded people's expectations.
I'm going to try and send the ECU out to InMotion on Monday so I can do the second dyno run on the same tank of fuel. They're going to have their work cut out for them.