I have a Lund tune and have had a handful of revisions to turn things on and off since it's locked down so damn much. Every time I've contacted them except for once, I got a response back within a day. The one time I didn't get a response back..... Is when I went through Evo instead of Lunds website. I've bounced datalogs back and forth with Jon during New years eve and got a response within minutes. I have a measly NA car and he's(and his son) helped me quite a bit and I've been pretty happy with my tune.