Well I just bought a Profec B and had it installed by a local performance shop. I'll keep them nameless for now until they fix it, heh. Well I get the car back and take out onto the expressway for a few pulls. Well I pull out and get on it, boost jumps to 12 psi and wont go above that. It stays there for a second and then starts bleeding off and falling. Second turbo never comes online. It's like the wastegate was staying pressurized and open. Weird. So I take it back and the shop was closing so they ask me to bring it back the next day. I bring it back and they try a few different things, cap off a hose they didn't do before and tell me it should be good. I go take it for a ride and nope, same thing. Well I come back again today and ask if they have figured out what to do yet and they're still stumped. So I asked if I could just get my money back and take it somewhere else. Of course not. So now I have to wait until next Tuesday and give them a chance to fix it. Does anyone know what could be the problem??? It's hooked up exactly like the DSBC install on MKIV.com and the switches on the back of the unit are right. I can't figure it out and neither can the shop. Any advice, or knowledge you have is greatly appreciated!