Im selling a sr performance cold air intake and a bama sf4/x4 tuner for 99-2004 mustangs. The cai was never installed but i used the tuner all you do is plug it in under the steering wheel, go through a few simple steps and then put it back in the box it came in and go drive around in your car. I'm asking $250 for both the tuner and cai if you have any questions just ask. That is the same tuner and a very similar cai only the one I have is stainless steel instead of plastic.