Monday, December 9, 2013

Gorilla Top-Mount Cold Air Intake

Earlier in the fall, I had been testing out a homebrew top mount cold air intake on the RS with help from  Things were good and there was a noticeable performance increase with this setup... but it just wasn't quite solid enough for me.  I had done some weather testing with it that it held up against, but after some not-so-smooth roads I barreled through, I realized that this design wasn't going to hold up to Rally, which is likely the direction this car will go.  Luckily, Derek at Gorilla Off-Road Company makes equipment for Subarus that do hold up quite well to this demanding motorsport.  After talking with him about the system and how his worked, I moved forward and picked one up for the RS.

Performance wise, there aren't any real changes between the homebrew setup and the Gorilla intake, as they both draw cold air directly from the hood scoop.  Both systems use a K&N Filter (I just purchased a new one to replace the beat-up one that the RS came with) and they're both hooked up directly to the intake manifold on this MAP-based system.  Really, the only thing that was wrong with the homebrew setup was that I wanted something a little more solid that could take the same abuse the rest of the car has managed to endure so far.

Derek's intake is actually crash tested, as he recently had one out of a wrecked RS for sale that only had scratches on it. It's built with a durable 6061 aluminum box that uses factory mounting brackets and is finished with a heat insulating black powder coat application.  As with the weather applications, I can say that I have put the homebrew system through it's paces.  The Gorilla Intake was mounted just before Winter Storm Dion and I drove the car all day through it with no issues.  Even after I had the car parked for several hours and snow had accumulated onto the hood.  I just started it up and drove away with snow flying off the car.  I'd imagine snow ahead of the hood scoop made it's way in, but after inspecting the intake once I was home, there still were no signs of any water that might have melted through.  

I'd say that, for normal driving conditions, the homebrew system does just fine.  It wobbles a little and I'd just worry about the intake getting tossed around.  It also took me a couple tries to get the fitment right and I was never 100% happy with how it sat under the hood scoop.  With the Gorilla intake, fitment was spot-on.  It's rugged, sturdy, and I just feel more confident with a solid setup like this whereas with the homebrew system, I was checking under the hood every time I hit a bump to see if it had wiggled itself loose or something.  I can focus less on worry about the car and more on bettering myself as a driver.  


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  2. where can i buy one of these for my 09 impreza 2.5i

    1. They don't make this for the '09 Impreza

  3. where can i buy this for my 2000 impreza?

  4. Gorilla stopped making these some time ago.