Engine Short Ram Air Intake

What Is a Short Ram Air Intake?

A short ram air intake (SRI) is one of the most popular and accessible performance upgrades available to the everyday enthusiast. The concept is elegantly simple: replace your vehicle's bulky, restrictive factory airbox and intake tubing with a compact, straight, smooth-walled pipe and a high-flow conical air filter. The goal, as the name implies, is to direct air into the engine via the shortest, least-restricted route possible — and that reduced resistance translates directly into engine performance you can feel and hear.

Stock intake systems are engineered to balance noise reduction, emissions compliance, and modest performance, which often means winding tubing, resonator boxes, and pinched transitions that limit airflow. A short ram intake strips away that complexity and replaces it with a tidy, free-flowing path that lets the engine breathe more efficiently.

Why Upgrade to a Short Ram Intake?

The most immediate benefit enthusiasts notice is improved throttle response. Because a short ram intake draws air from inside the engine bay and gives it a shorter, smoother path to the engine, the power arrives more quickly when you press the accelerator. Many drivers describe this as a snappier, more eager feeling from their engine — especially at higher RPM ranges.

Beyond responsiveness, short ram intakes deliver a noticeably more aggressive induction sound. The open-element filter and unsilenced tubing produce a throatier intake growl under hard acceleration that the stock system deliberately mutes. For drivers who enjoy a more spirited driving experience, that acoustic upgrade alone is often worth the installation.

Short ram intakes also offer a number of practical advantages over their cold air intake counterparts. They are generally easier and faster to install, require fewer modifications, and are less susceptible to the water ingestion risk (hydrolock) that can affect cold air intakes with filters positioned low in the engine bay. Many kits can be fitted with basic hand tools in under an hour, making them an ideal first performance modification. High-flow, reusable dry filters included in most kits also improve filtration and can be washed and reinstalled rather than replaced outright.

What to Consider When Shopping

• Heat soak: Because short ram intakes draw air from inside the engine bay, they can be affected by heat buildup — especially during slow city driving or when the radiator fan runs. Look for kits that include a custom heat shield to mitigate this.
• Vehicle fitment: Short ram intakes are vehicle-specific by design. Always confirm your exact year, make, model, and engine before purchasing.
• Filter type: Most quality kits include a dry, oil-free filter that won't contaminate your mass airflow (MAF) sensor — an important consideration for fuel-injected vehicles.
• Finish options: Many kits are available in polished aluminum or powder-coated finishes, so you can choose a look that complements your engine bay aesthetic.

Top Brands in Short Ram Air Intakes

Injen Technology is the dominant name in this category and for good reason. Injen holds four patents on the tuning process of an intake system — a distinction no other manufacturer can claim — and their SP and IS series short ram systems are manufactured in Pomona, California using aerospace-grade 6061-T6 aluminum tubing. Their proprietary SuperNano-Web dry air filters maximize filtration surface area without requiring oil, and every Injen intake is backed by a Limited Lifetime Warranty. For enthusiasts who want proven engineering with real patent-protected performance technology, Injen is the benchmark.

DC Sports brings a value-driven approach to short ram intakes that has earned them a loyal following, particularly among Honda, Acura, Nissan, and Infiniti owners. DC Sports kits feature oil-free dry filters that protect the MAF sensor, corrosion-resistant aluminum alloy piping, and a straightforward bolt-on installation designed to improve throttle response without requiring costly engine management changes.