Welcome to the group jwalkn, I'm a Transit Bus Tech from Illinois. Our equipment has Cummins ISC and ISL with Caps and our new Hybrid Buses have the Cummins ISL 9 Engines with EGR and SCR systems. I work on a little bit of everything but a good portion of my time at work is doing electrical and performance diagnostics. Plus I am one of the main guys that does a lot of Air Conditioning work on our TK systems. Anyway, be sure to check out Cummins Westport Bus Forum, I have quite a few captures on there showing known goods and I have some case studies on there too. Also give Jim Davis a shout too. He is a Transit Tech like me too. Jim also has some cool stuff on there also. If you need help with anything, let me know. More than happy to help out and I am looking forward to seeing some captures from your equipment. The one thing I recommend though is start taking as many known good captures you can. It helped me diagnose a problem bus with a bad ICV Valve. Check it out, it's on the Cummins Forum.
. Also give Brad Halse and Anthony Lamb a shout too. They work on Diesels too and they are very sharp. They have been very helpful to me the past year. Everybody has been helpful to me, those are just some names that come to mind. Oh, hold on I can't forget Mick, Spence, Preston, Tom, Brandon. The list is long, lol,
To sum it up your in good hands here. Give me a shout if you have any questions, glad to have you here.