K&N air filter replacement in 3GS
#1
Lexus Test Driver
Thread Starter
K&N air filter replacement in 3GS
Just curious what should I expect? I replaced it before the weekend, and only today had the first long stretch 50 mile run on a way to work. Could be a product of my wishful imagination but it almost felt like I got a little more power while accelerating. I'm a complete under-the-hood illiterate when it comes to mechanical parts, but it really did feel like less hesitation during the acceleration from the stop and rev up sounded a little bit louder. I did remember reading somewhere about a gain of half-a-dozen of HP with K&N air filters, is that true? If so, than it’s probably the cheapest and the easiest mod for the car
#3
Lexus Fanatic
K an N advertises 18.1 hp increase with the intake system. Sounds like an attractive amount, but I am sure its less than that. They back it up on their web site with dynographs. I am not saying its 100% accurate but no other company will offer this proof, If I get an intajke it will be the k&n
#6
Lexus Test Driver
Thread Starter
Not cabin air filter; I don't think K&N makes those. I was talking about the engine air filter, but not the high peformance air intake kit. As they state on their website:
- Designed to increase horsepower and acceleration while providing excellent filtration
- Simple drop-in performance
except the one for our 3GS has a shape with a cut off corner.
- Designed to increase horsepower and acceleration while providing excellent filtration
- Simple drop-in performance
except the one for our 3GS has a shape with a cut off corner.
#7
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Join Date: Sep 2006
Location: Spokane, WA
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I know, it must have been the increased sound of power, that’s got to be worth and additional 18 hp. Or it was a flash back to the sound of the RPM needle hitting 8 grand in the ES. Ha Ha.
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#9
Lexus Test Driver
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#10
I don't think HP gain is the purpose of the "drop in". I've always used their replacement filters as I feel there is less restriction. I've noticed a slight improvement in MPG's with them and for a few dollars more than a restrictive paper pleat, a K&N lasts up to 50k miles. Then you can get a kit to clean and reuse it or, as I do, replace it. I have a K&N CAI on my Frontier and it gained MPG's and upper RPM pep. It's also a little louder when your on the pedal. I really don't wind up the Lexus to achieve the benefits of a CAI. Plus it's kind of intrusive having to loose a lot of the engine plastics.
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