I did the installing myself, it is quite simple if you ask me. Spool has some picture instructions that come with the package. The stage 2 is a little bit pricy(3K) then the stage 1, cuz it has the tubular manifold and the Tial wastegate. Just because of these two additions to the kit I come into boost going at partial to mid-throttle at 2.8Krpm and it jumps to fivePSI in a hurry. Things get real scary quick. To add to the performance you have to get an exhaust system which will run you another $450 if you get it mandrel bent. The muffler will be another $250, and if you get a second highflow cat like I did, that will be another cool $130. So that will be the total cost if you do it yourself. Not to mention the tools that you need. (You'd better have a garage with plenty of tools to do this job.) If you get it done from a shop they won't charge you less then $800, unless ofcourse you got a hookup. I might go intercooled when the weather gets warmer in a couple of months. Right now it is 40F perfect for non intercooled. I do have my intake set up as a CAI so based on smp300 findings that shoudl help out alot. I had to utilize my injen intake(paid enough for it). Once you boost you wonder how come you stayed boostless for so long. I will find some place soon to dyno when I get a chance, I am currently waiting on my spring for my wastegate. I jump real high if I go WOT, 6PSi is almost immediate, but don't bog down until I hit almost 8PSi)...cuz the spring in the wastegate is for 20PSi setup. Hopefully spoolin will be able to get me the correct spring this upcoming week. Ok I hope that answers all your questions.