Hey there, I see you've posted on a couple threads and thought I'd shoot you a message and see what you can do. I've got an 03 chevy 2500hd duramax I'm looking to do an exhaust MBRP 4" downpipe back, maybe a CAI with a different mouthpiece as I hear those two items combined makes for the best gains. And I'm also looking for a tuner, I was looking at the edge CTS system but I know everyone recommends EFI live, though I have no tuning experience and not sure on all the details how the EFI live works or if you ship it with programmed tunes. The truck is all stock besides a 4" lift on 33's. Thanks for your time!