I know this topic is getting beat to death, but I have some more questions. I was looking at an Aulstrian site the other day, and they offered alot of different turbo parts. They had external waste gates, blow off valves, boost controllers, fuel cutoff things-they dont let the ECU cut off the fuel, fuel injection systems, intercooler sprayer kits, etc. So what I want to know is how the turbos work. I have heard of people adding boost controllers, which They had for 60 dollars, which allowed them to run lots more boost. What I dont get is how this is possible without upgrading the ECU, and even then, doesnt the ECU cut off the boost. I want to make my car faster, but Im not sure what route to take. Am I better off getting a new ECU first, then worrying about all this other stuff if Im still not happy. How about the blow off valve, I understand I dont need it, but they had them for 90 dollars, I would spend that for the noise alone. They also said it was really loud, so that seemed neat. It looked like it hooks up to a little tube, but when I see them on cars they always seem to be hooked to the big turbo tubing, not a little vacuum line. Any clarification on that. <A HREF="http://www.autospeed.com/cgi-bin/browse.cgi?category=624&" TARGET=_blank>http://www.autospeed.com/cgi-bin/browse.cgi?category=624&</A> . Ok thats a copy of the website link that I was checking out. <A HREF="http://WWW.Autospeed.com" TARGET=_blank>WWW.Autospeed.com</A> is a neat site for those of you who havent checked it out before, they have gobs of informations. Ok so thanks.