Please forgive me as I'm sure this has been covered at some point.

What is the difference between the Kali SO and the HO? Not numbers but physical differences. Computer, injectors?

With the aftermarket computers, they all seem to start from the stock numbers and go up from there.

If the HO is in Kali now, I don't understand why DC does not offer a retro kit. One from Cummins?

Thanks.

 

check out the cummins web site, they give some description of it there.
If your interested in warming up your SO check out the Banks web site, they show dyno. tests on an SO with there box, and without.

 

Of the three, TST, Bullydog and Banks, Banks is at the bottom. What I'm looking for is can a SO be caught up to a HO with stock stuff. What would I have to get to make my SO a HO. Then, if I do juice it up, I'll end up with more. I'm not unhappy with the SO. Not by a long shot. It's one of the best vehicles I've owned. I want to know the physical differences that actually make the power. Not the ones like the oil system.

 

The only physical difference is the pistons. SO pistons are gallery cooled (oil splashes up from crank shaft webs onto the bottom of the piston. HO pistons are nozzle cooled (pressurized noozle sprays oil on bottom of piston). Other than that, the only difference is in the ECM calibration.

 

The HO also has a different computer program and a heavier Flywheel and more emissions

 

for a while there at least with the gen 2's i seem to recal it being a slightly different compression ratio and also timing, i dont recal if there is a difference in turbo fans? anybody out there who can verify this