New shop selling K&N filters in Chaing Mai

Aug 21, 2004
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On the ground floor in the New Pantip Plaza (night Bazar) there is a shop selling very expensive yellow corn biker gear. I was surprised to see a cabinet full of K @ N filters in the shop. They even had one for my old 1976 Beemer and at 2,000 bht(with discount) a bit of a sting, but less then I would have to pay getting it sent to me from outside Thailand. Aparently they can order from bangkok aswell if they don't have yours in stock.
 

DavidFL

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Jan 16, 2003
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Toby
I think that this shop is called Fast Corner & is a branch of the Bkk Shop.
Lets hope they can last a while, as in Chiang Mai we need more shops with stock of parts & accessories.

Davidfl
Keep the power on
 

Klaus

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Mar 8, 2004
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Does it make sense to but a K&N air filter without changing the jets and getting a free-flowing exhaust system?
 

Tom

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Apr 18, 2003
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Using a K&N filter does not always mean you have to alter the jets and certainly not the exhaust if your bike runs to rich you put less oil on the filter.
 

Klaus

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Mar 8, 2004
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So what's the benefit if you only change airfilters?
If you have less restricted air intake, the engine should run more lean. A mechanic told me that there's practically no benefit if you alter only one component. To get more power and torque, you need more air/gas in and out, hence air filter/ jetting/ exhaust changes. Changing only either one may result in even worse performance. Lots of Honda Waves backfire when revved up because loud mufflers were installed.
 
Mar 11, 2004
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Beware of the Hype, there are many tests done under laboratory conditions showing that K&N will let thru considerably more particulates than stock paper airfilters, and their perfomance drops off after use and "loading up" Let's look at a quote from one test.
If we had 100 grams of dust on a new BMW filter we would let through a total of 6.6 grams of dust in. If we used the new K&N filter we get 14.8 grams of dust. That's 224% (TWO HUNDRED TWENTY FOUR PERCENT!!) more dust ingested initially, stock vs. "free flow" and this ratio is pretty much held. Somewhere between 200-300% more dirt gets "ingested" anywhere across loading equivalence.
Look at the K&N website, lots of anectodal type "comparisons, Paper/ Foam / K&N" but very short on specifics and independant laboratory data.
Worse they have a drawings showing swirly air on the outside that is miraculously transformed into straight flow as it passes through the filter, CRAP !!! Only a moron would believe flow can be straightened up in the 3/4 mm passing trough the filter membrane. Auto manufactures aren't that stupid, sure they have a cost / Value constraint, but I'm sure if BMW/ Mercedes etc thought a K&N style filter would add a long term performance enhancement and still provide top particulate protection they would adopt the K&N style if not use the product. I am sure K&N gives a slightly better flow rate from new, but in general it has MUCH less filtration area, and filter area is an important part of long term engine protection.