DIY Guides for various original equipment replacements as well as aftermarket performance part installs.
BMW N54 Intake Valve Cleaning It is recommended you do this every 40,000-50,000 miles. Installing an OCC (Oil Catch Can) can help prevent some of the carbon build-up, however cleaning is still necessary every ~60,000 miles. Tools Needed: COMING SOON ALONG WITH PHOTOS! Also use: -B12 Chemtool Cleaner (2-3 cans) -Carb/Brake Cleaner (3-5 cans) -Brass [...]