Additives & Boosters

Unlock your Porsche’s full potential with fuel additives and boosters from Design911. Our range includes performance-enhancing fuel treatments, injector cleaners, octane boosters, and system protectants designed to maintain optimal engine performance. Whether you’re improving combustion efficiency, restoring power, or protecting your Porsche’s fuel system from carbon build-up, our premium additives deliver results trusted by professionals and enthusiasts alike. Perfect for both classic and modern models, Design911 fuel additives ensure your Porsche runs cleaner, smoother, and more efficiently.

Fuel System Cleaners
High-performance fuel system cleaners that remove carbon deposits and improve injector performance for smoother engine operation and better fuel economy.

Octane Boosters
Premium Porsche octane boosters designed to enhance combustion, prevent knocking, and increase engine responsiveness under high-performance conditions.

Engine Protection Additives
Protective fuel additives that prevent corrosion, reduce wear, and extend the life of your Porsche’s engine and fuel system components.

Diesel & Petrol Treatments
Comprehensive range of Porsche-compatible fuel treatments for both petrol and diesel models. Improve efficiency, reduce emissions, and restore lost performance.

Fuel Stabilizers
Additives designed to keep stored fuel fresh and stable, ideal for Porsches used seasonally or in storage. Prevents varnish and deposit formation.

Professional Workshop Additives
Workshop-grade fuel additives formulated for maintenance, diagnostics, and performance testing — trusted by Porsche specialists and tuners.