Water/Methanol Injection Kit

The AEM Electronics Water/Methanol Injection Kit (model 30-3300) is a precision engine management system designed for forced-induction performance applications where octane demand and combustion temperatures demand cooling intervention. This kit addresses a critical need in turbocharged and supercharged engine builds: controlling knock and detonation while maintaining aggressive ignition timing and boost levels. Whether you're running a high-horsepower street car, competition platform, or heavily modified daily driver, water/methanol injection delivers measurable thermal management that allows tuners to push timing curves and boost thresholds beyond what gasoline alone safely supports.

AEM's system employs a dedicated injection strategy that sprays a water/methanol blend directly into the intake charge, exploiting evaporative cooling to lower charge temperatures before combustion and simultaneously increasing octane rating through methanol's inherent anti-knock properties. The kit includes all necessary components for installation—pump, nozzles, lines, and standalone controller—engineered to integrate cleanly with both OEM and aftermarket fuel systems. The complete assembly weighs 10.61 lbs and ships in compact dimensions (12.8 × 6.1 × 16.8 inches), making it suitable for tight engine bays. AEM's proven controller logic manages fluid delivery proportionally to boost pressure, preventing overspray at idle and ensuring optimal mixture at peak demand.

This kit benefits turbo and supercharged platforms across multiple segments—import tuners, domestic muscle car modifiers, and motorsport competitors alike rely on water/methanol systems to support mid-range power increases of 15–25 hp and unlock 1–2 psi of additional safe boost. Installation requires basic mechanical skill and familiarity with fuel system routing; AEM supplies detailed documentation for most common platforms. Compatibility spans most direct-injection and port-injection engines; verify fitment for your specific turbocharger location and intake configuration before purchase. Fluid costs are minimal, and the system requires periodic reservoir refills—making it a cost-effective alternative to premium fuel cycling or engine rebuild for serious tuners seeking reliability.