Installed on my 2016 Chrysler 200 S (4 cylinder). Installation was pretty easy. Took me about 45 minutes from start to finish. As long as you have basic mechanical know-how (and basic tools) you should be fine. Now for the actual assessment. As for fuel efficiency, I don't see any difference. As far as throttle response goes, I can see the difference. Not too far from the line. It still looks the same. But when I'm already driving and hitting the gas pedal, it seems decently faster. For example, if I'm doing 70 on the freeway and hitting the ground to avoid a semi-trailer, it'll throw me back in my seat a bit and I'll get to 85 before I know it. Seems to be even more pronounced when I'm driving maybe 30 or 40 on a country road and stepping on it. Now for the sound. I've read other people saying things like the cold air intake don't improve the sound, or other people saying it's too loud. I'm telling you, in my opinion, this is almost the perfect balance you can get. So in my car you don't hear anything anymore until you reach exactly 2500 rpm. So when you click it, it starts to sound a little louder. So between 2500 and 4500 rpm it's mostly louder, but not overly loud. It definitely sounds deeper and more guttural. I don't think it's more like a 4 cylinder engine. To be honest it sounds really good. Then when you pound it between 4500 and 6500 rpm, it hits a whole different level. It's MUCH louder and more guttural. Sounds pretty rough. I would say it sounds like what you think a sports car sounds like. And when you combine all of this with flipping the switch to Sport mode, it's a real pleasure to drive. And I had someone at work drive it across our parking lot and turn it on so I could hear it from outside and it sounds really good. I wouldn't say he climbs into evil range, but I probably wouldn't shoot him late at night in your area. But if you just keep your shifter in good old gear and try to drive fairly conservatively, it doesn't really get loud. And at highway speeds, you're floating between 2000 and 1200 rpm in cruise control. So even on the track it is not audible. Like a normal car. Overall I'm very happy with it. I'm already half thinking about swapping the car here in a few years and getting a 6 cylinder Challenger. I know, I know, the 6-cylinder Challenger sucks. But I drive half an hour to work every day and need fuel efficiency. That and I live in Ohio so I want 4 wheel drive which is only 6 cylinders. When I get this car I will DEFINITELY buy another K&N cold air intake for it. I have absolutely no doubt that this car will sound like an 8 cylinder and just plain mean π. In short, if you're about to get one of these, go for it. I promise you will be happy with it.
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