So I know from what I have read the Autocal is not your favorite subject but I gave in because I needed something quick and easy. So I ordered the Spade through Alligator perf. I have done some business before with them. So I got the Spade delivered Monday and installed it. Should be no problem right? Well it came with no instructions, and it is similar to the Autocal, but not the same! I have dealt with a few tuning devices some I was able to muddle through after making probably every possible screw up! So it RUNS GREAT, SOUNDS GREAT, SHIFTS GREAT! I am really happy with the tune. However it popped a code. So I called Duramaxtuner, talked with a guy said he was the cummins guy, he passed me off to Bob, cool! He said let me talk to Nick I'll call you right back. Next morning I called again, spoke with a nice lady, she took my info, said someone would call me directly. This afternoon I called again talked to Bob, he said they figured it out and he would e-mail a fix tomorrow, as they were trying to get UPS out today. Not impressed with the customer service!!!!!!!!