Let me tell you guys about a little free program I found. I bet your expensive OBD II scanner will seem useless after you see this video. ELM-327 Bluetooth Adapter: amzn.to/2TeC52R Download FORScan: www.forscan.org
I love ForScan. My brother's 6.0 cracked an injector tip last week, and we were able to figure out which one by using the ForScan to shut one injector off at a time. The bad one showed the least amount of change in RPM, and idle smoothed out with that one off. Already had a spare injector, so it only cost us $8 in seals to fix it.
Its a Microsoft Surface that I bought specifically for troubleshooting vehicles. I don't think there is a Mac version, unfortunately. Maybe contact the author of the software and see if he/she has something in the works?
