Wow!
$600 for things that most of us on this forum could do in about 45 minutes and less than $100 in parts (depending on how much the MAP (Manifold Absolute Pressure) sensor would cost.
Go to
www.RaceandStreet.com and under "store" click performance and get yourself some Crane Firewires from Maggie. Go to any auto store and pick up some decent copper plugs for your turbo and buy some Throttle Body spray cleaner and to the dealer or NAPA and pick up a new MAP sensor.
Take the parts to anyone mechanically inclined and that you can trust and make a deal for installing the parts and cleaning the TB. You'll save yourself probably about $400.
The MAP is located on the upper manifold next to the overflow bottle ....(see picture below). It's easy to take off.
