Easy-to-use CRC GDI IVD Intake Valve & Turbo Cleaner is sprayed through the air intake. It contains the highest concentration of PEA (Polyether amine) detergency which is delivered directly to the backs of the GDI intake valves and removes up to 46% of carbon deposits in the first 60 minutes. No costly engine teardown is required, and it is safe and effective for all gas-powered engines, including turbos. Proven results on turbo systems! SEE REAL TEST RESULTS AT www.crcindustries.com/gdi/ CRC GDI IVD Intake Valve & Turbo Cleaner increases power and torque, stabilizes rough idle, solves rough starting problems, reduces emissions, improves fuel economy. Cleaning is needed every 10,000 miles or at every oil change to prevent deposit buildup. Remember, gasoline additives don't reach intake valves on GDI engines!