For the intake. Spray it down with brake clean and power wash it. Spray it with brake clean again and let it sit overnight in a sealed garbage bag to keep the brake clean from evaporating away. Then take a thin long brush fed it in the cylinder intake holes work it in and out scrubbing away (sounds kind of sexual ) until it's good and clean spraying more brake clean as required. Rinse it out then put simple green in a power washer hooked up to the hot water outlet and blast away It works great, nice and gets it clean The soot does stain the inside of the manifold due to the porosity of the metal but all the soot will be gone with a stained black look remaining. For the turbo see ERwin8R' post above.
Last edited by dee004; 10-11-2012 at 03:47 AM.
Reason: Added info