Hey all! So I am working on building up a cast iron 6.0 LQ4 block to replace the stock 5.3 in my truck (2008 Yukon). I'm also going to be installing a 4L80E transmission at the same time. I have just about all of the parts ordered for the engine, and I'm just waiting to get the block back from the machine shop so that I can start assembly. Once I get this built, I know I am going to have to have the computer flashed to support the new engine without AFM and the new transmission. My question is where to get the tune done and what the cost of it is expected to be. I was told that I could buy an HP Tuner to flash it with. And a performance shop I called, quoted me $500 to create a tune to use with everything. At that rate, I'm going to be spending close to $1200 on getting it tuned, and that seems a bit excessive. I've already spent way more than I intended on getting the block prepped and the parts ordered. So I want a tune that is going to work without breaking the bank. Any info is appreciated! Thanks!