Collection: Auto - Fuel Octane Booster

Eliminate engine knock and unlock maximum performance with our selection of Auto Fuel Octane Booster formulas. At DIY Customs, we provide high-concentration octane additives, durable fuel system cleaners, specialized racing fuel concentrates, and heavy-duty combustion improvers designed for a perfect fit. Whether you are running high-compression cylinders on a custom street rod, tuning a turbocharged engine for maximum boost without pre-detonation, or simply improving the fuel quality for a classic restoration, our professional-grade additives offer the RON/MON increase you need at unbeatable prices. From specialized MMT-based boosters to street-legal performance enhancers and lead substitutes, we carry the essential fluids to protect your engine. Don't see the specific point increase, bulk size, or specialized racing formula for your build? Hit the live chat or call 412-882-8346—we can special order and drop-ship exactly what you are looking for directly to your doorstep!