CRC GDI IVD™ Intake Valve & Turbo Cleaner removes carbon build-up commonly found on the backs of intake valves in all types of petrol powered engines. CRC GDI IVD™ Intake Valve & Turbo Cleaner dissolves and lifts deposits from valve stems and tops without the need for top engine disassembly. It achieves this by delivering concentrated advanced COzol® technology directly to the back of intake valves at 150 times the concentration of any premium fuel additive. Deposits are a major concern and form in every fuel system within just 8,000 – 16,000 kms, but the amount and how quickly they form depends on the quality of fuel and oil you use, driving style, and engine type. GDI engine intake valves are prone to rapid deposit build-up and increased operating temperatures because they never get washed with fuel. CRC GDI IVD™ Intake Valve & Turbo Cleaner increases power and torque. It cures rough idle, hesitation and stalling and improves airflow and fuel efficiency. CRC GDI IVD™ Intake Valve & Turbo Cleaner is also effective in standard fuel injected engines. Safe for use on turbos and intercoolers.