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Re: Would a K&N air filter hurt performance? (archive)

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Posted by john 70 1602 on June 28, 2001 at 23:36:09:

In Reply to: Re: Would a K&N air filter hurt performance? posted by sb on June 28, 2001 at 13:12:43:

I installed the K&N free flow filter on my 73 tii and it runs great - actually a little better than before. It's quieter at high rpms and I have noticed NO compromise in power, start-up, or gas mileage. In fact, my 02 feels faster and runs better since I upgraded to the K&N. Check out the link below and you can see what I did to my tii with th K&N.

As i remember a tii produces about 140hp. That power level requires a K&N filter with 50+ square inches. If the filter you put on does not have that area for sure you are losing horse power. Check , a 3 inch dia by 5 inch long cylindrical filter has(3X3.1416X5=47inches sq). Other factors favoring the stock unit may be cool air and flow characteristics of the big can. I would replace the stock filter elements with K&N.

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