K&N Air Filter

Jngrbrdman said:
Its not the filter that is giving you that sound. Its the short ram intake you've got there. The filter itself probably isn't doing a whole lot for you. I put a short ram on my car because I liked the sound better than the full length CAI. I like how it fills out my engine bay too. People say that the CAI will give you more power, but I don't believe it. I highly doubt that a tube with a filter on it can provide any noticable power gains. I did notice that my fuel economy improved with the shorty on there. That is always a good thing. I don't have a K&N on it but I do have a good filter. I think that's all that matters. :)
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CAI will give move power, especially in the midrange. I have yet to see an independent dyno test fail to back that up. The longer tube of the CAI increases intake velocity (sort of like the long intake manifold runners Dodge used on the 413's back in the early 60's that were real torque monsters). In addition, for every 10 degree drop in air intake temperature, you get about 1% more power.



The tube and filter work because the air no longer has to be pulled through a small tube near the headlight (on most cars), then down into a resonator chamber with (baffled to reduce intake roar), then through a panel filter and then a tube that usually is made of rubber and ribbed which causes turbulance to the incoming air. I know my stock intake was drawing the air through a very small intake tube and you could see the torturous route the air had to take through the resonator when you looked down into it.



You might be interest to know that SCC recently tested intakes on the RSX Type-S and most of the short ram style intakes made 7-10 hp, but the DC Sport and AEM cold air intakes made an additional 19 and 20 hp, respectively. Apparently the stock intake is heavily muffled and restrictive because all the aftermarket intakes were pretty loud.



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Sprongs:



A drop in K&N filter is worth the money to me because it is the last filter you will need to buy. I wouldn't expect more than a couple of horsepower though, so if that is your goal, then an aftermarket intake and filter is your best bet.
 
I have a K&N in my Explorer. I got ZERO power gains. I only stick with it because the OEM filters are $18/each for the Explorer. :eek:
 
I dropped a K&N filter in my RX 300 at 3,000 miles. I've checked the mileage on every tank of gas before and after. Overall, I've seen an 8% gain in gas mileage.



Not much, but it means that it will pay for itself after 12,000 miles, I'll continue to get great gas mileage, and I'll never need to buy another filter. :D





HP? Who knows...I'll say this, I get loaner RX 300's when I get my RX serviced and everyone I get feels more sluggish, with less punch, compared to mine.
 
Recommend changing to the K & N filter

Only needs to be cleaned every 25,000 to 50,000 miles and its a breeze.

Had my car dyno tuned before fitting a new cam and k & N.

Then dyno tuned again and found 5 horsepower from the $150 dollar K & N and 30 hp from the cam.

Plus you only ever need 1 K & N. It can be cleaned thousands of times.

Found my mileage increased and peformance was much better

Now get 1175 kilometres to a 68 litre tank of fuel (17 gallons approx)



Next thing people will be recommending you to use cheap oil and changing it every 1,000 miles.

I prefer using Redline oil at $112 per 5 litres and a $30 dollar K & N oil filter and changing every 7,000 to 10,000 kilometres.

Better lubrication and performance as well
 
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