Review on 🔧 K&N Cold Air Intake Kit for 2012-2018 Ford Focus, 2.0L L4: High Performance, Increased Horsepower – Compatible, 69-3517TS by Howie Broyles

If you like quiet, don't read any further. although a cruising speed of 70mph is fine as long as you don't want to accelerate. There's a weird set of new sounds that definitely sound faster and sometimes louder than my ST. Now it's more of a boxer engine, mostly at low revs with full throttle. A significant improvement in fuel economy on the highway. I've seen 43+ with about 70. I'm not sure about the city. I will update after more kilometers in a while. The assembly took about 3 hours if you read the instructions carefully. Attaching the breather hose to the plastic intake was a bit of a hassle, but not as bad as attaching the silicone grommet to the MAF body. Be patient. Picking up the phone while fiddling around in the engine bay has the same success.