Injen Cold Air Intake: 2012 Honda Civic Si

Injen Cold Air Intake: 2012 Honda Civic Si

Remember how easy performance modification was back in the OBD-1 or pre-OBD days? Slapping an intake on your '95 Civic's non-MAF-equipped engine resulted in power increases you could actually feel. Well, the moment we took our 2012 Civic Si for a spin after installing Injen's tuned cold-air intake system we noticed something odd for a brand-new car with an aftermarket intake – no check-engine lights, no weird vibrations from parts that don't fit and, most importantly, power and torque we can actually feel!

Yes, the 2012 Honda Civic Si is equipped with the venerable K24 engine that Honda has been using in so many of its models over the past decade. But, fitting one in the bay of the '12 Si did require Honda to tweak the intake plumbing and re-calibrate the engine management system. Fortunately, based on decades of its intake-fabricating experience, Injen has built and tuned a cold-air performance replacement that delivers just the type of exacting performance you've come to expect from the brand.

Part of the secret lies in the unit's dry-media cylindrical filter and internal velocity stack. But, more has to do with its slightly unorthodox appearance that merges different diameters of TIG-welded, mandrel-bent lightweight aluminum tubing into a perfect-fitting system that optimizes the velocity of incoming air drawn from in front of the engine where it's the coolest, most dense and ideal for making power. Injen calls it “MR Technology” and “Air Fusion.”All we care about is that it works.

Injen Cold Air Intake: 2012 Honda Civic Si Injen Cold Air Intake: 2012 Honda Civic Si

In an independent test with a 2012 Civic Si, the Injen cold-air intake produced positive increases across the entire powerband with top-end gains of nearly 14 whp and 11 lb-ft of torque. Even larger gains were seen at points throughout the mid-range.

Installation isn't a quick process, but it's not difficult thanks to detailed instructions included with every order (our advice is to follow them) along with all the necessary hardware and manufacturer's warranty information. Once you've finished installing the system and find yourself out-running your stock brethren, you'll have the satisfaction of being able to say you even got your hand s a bit dirty. The whole system even looks good too and is available in your choice of polished aluminum or powder-coated metallic black. Impressive, even by yesterday's standards.

Related Articles

Quick Drive – 2025 Chevrolet Blazer EV SS Quick Drive – 2025 Chevrolet Blazer EV SS
The Skinny: The 2025 Chevrolet Blazer EV SS is not only the most powerful Blazer EV, but it’s the fastest SS (Super Sport) model every built by...
Is Subaru planning an STI return? Is Subaru planning an STI return?
My first thought upon reading the headline for this story is don’t get your hopes up. But a recent Car and Driver story has me thinking it could...
Your car is probably not stolen. Probably. Your car is probably not stolen. Probably.
You likely don’t give it a second thought, but there is a remote chance the car you’re driving – the one you paid for and completed reams of paperwork...
Aasbo Takes FD Round 1, New Track for Round 8 Announced, Larry Chen Inducted Into FD HoF Aasbo Takes FD Round 1, New Track for Round 8 Announced, Larry Chen Inducted Into FD HoF
Long Beach is always a tone-setter for the Formula DRIFT season. It’s tight, fast, and leaves little room for mistakes. That much hasn’t changed, but...
Will Genesis build these stunning concepts? Will Genesis build these stunning concepts?
If looking at the latest Genesis X Gran Coupe and X Gran Convertible concepts gives you a feeling of déjà vu, don’t worry, it’s a perfectly normal...
Toyota Discontinues GR Supra Toyota Discontinues GR Supra
I’m not saying we here at PASMAG are going to dive head-long into the prediction business, but we really nailed it when we said on the latest episode...