2002 Kenworth T800 Detroit 60 Series 12.7 Tuning Help

I have put my faith in Pittsburgh Power to handle difficult-to-diagnose electrical issues. It seams just mentioning their name is "controversial" because I've often heard that they are overpriced. My view is that as long they diagnose and fix your truck correctly the first time, then I don't mind paying more $. In the last 15 years, I've had them rebuild one engine, do 2 ecm tunes, and also some other stuff, and haven't had a problem with their work. However, I've never tried going anywhere else. So, there might be someone who does reliable work for less $. PP used to have at one time 1 mechanical engineer, several electrical engineers, and one chemical engineer on staff. An electrical engineer (Leroy) started with them when they built out their ECM program, then went to Cummins (to Cummins development side), then years later came back to PP. He was there last year when I took my truck there. What impressed my with PP is that they invested in a Dyno that has a hydraulic pressure plate to stabilizes the truck at the 1/5th wheel-and is patterned I think. It allows mechanics to try to "recreate" a problem and troubleshoot while being around the truck. The fact that they allocated so much resources-at a big risk I imagine-to be able to get trucks running right says a lot to me. I imagine they've just about seen it all and can get that truck running right "on the first try". They used to have remote tuning as well. So I bet they still do.

 

Leon from CT can tune detroits , he did 2 of mines

 

Tuning is never gonna repair a mechanical issues

 

DCS - Fernando DeMoura. Diesel Control Services.

I sent him mine for memory replacement, internal inspection, testing and tune. Happy with the result, if you need the ECM ran on a test bench with injectors for 12 hours to completely eliminate it as a culprit, and to re-establish a 'tune', or set of parameters, after every other computer monkey has been at it.

 

No you haven’t but your convinced you habe

 

If the engine was rebuilt with the low compression pistons (common) they often smoke especially in cold weather but I’d suspect a leaking injector . Do you oil sample I’d bet fuel dilution is high.. most low nox tunes are harder on fuel and less power but not known for smoking from what I remember.. PS Pittsburgh power will only sell you a pricey low nox tune because epa went after them years ago..