Quote Originally Posted by Garandpa View Post
No can return ZZP PCM, so worst case I'm out $125 if I order the 3800 Performance version. Overkill is twice as much $$.
I think overkill will give you a $50 credit if they are using a competitor's core. Just a thought. I will say that I was able to raise my mpgs a fair amount when I tuned it myself. I added a bunch of timing to the cruise tables, way more than any of the canned tunes I've seen have.