See the following posts:
Throttle Body cleaners compared carbon buildup and tb cleaning The Intake overhaul (How-to on contour.org) was the best thing I've done to my car! I've gotten so much lower end torque back it's amazing. At 80k miles, my EGR Passages where nearly completely clogged with that black carbon buildup and the back of the Throttle Body plate had nearly 1/8" of buildup! insane! My cold starts have even been fixed. She runs sooooo good now!
It was actually not that difficult of a job either. The only experience I have working on cars is installing my KKM
Just follow the directions in the overhaul how-to and you'll be fine. BTW, I decided to do the whole intake overhaul how-to with the exception of the injector O-rings. My main concern was cleaning the upper and lower intake manifolds along with the Throttle Body. no sense just shoveling the snow out the very end of the driveway if you have to drive all the way up to the garage, right? The lower intake manifolds where just as horrible of a sight. I'd recommend having a small vacuum on hand though for when you get ready to pull the lower intake manifold off. Vacuum and leaves/debris from around the backside, front, and sides of the lower intake manifold since anything back there will want to fall directly into the cyclender heads when you remove the Lower. Good luck! and remember, it's worth it!
