Hey guys,
I've been thinking of replacing my air filter since the haynes manual says I should've a while back. I was looking at the K&N filters, but can someone explain the difference between:
the lunchbox:
http://www.knfilters.com/search/product.aspx?prod=ru-2970
and the drop-in filter:
http://www.knfilters.com/search/product.aspx?prod=su-5589
what are the pros and cons of each?
Thanks.
simply the lunch box will require a rejet of your carbs and the removal of the entire air box
the drop in wont
The stock paper filter is cleaner. You can also wash in gas and reuse it atleast 3 times. I mean I've done it 3 times so far 3-4k miles between washes. At some point I guess it would disintegrate ... but more than 3.
Both K&N's are pretty dirty, they send a lot of particulate matter into the intake. So if reuseability is the big draw for you, stay with stock and wash and run it.
Cool.
Buddha.
2 nice things about the lunchbox:
1: The new noise. The GS sounds really good with a stock exhaust and lunchbox
2: You get to eliminate the stock air box. It's such a PITA in my opinion to get all the hoses wrapped around the air box just right. I had several issues that ended up being caused by the air box pinching a hose here or there before I went to a lunch box.
Thanks for the replies,
So if the lunchbox will require a rejet, how much will this hurt the fuel economy?
I'm still not set on anything but I leaning towards what Buddha said, and just cleaning it with some gas.
you'll probably lose 4-5 mpg.
I went from normally getting 60-65 to getting 55-60 mpg
Quote from: The Buddha on September 04, 2015, 09:45:28 AM
The stock paper filter is cleaner. You can also wash in gas and reuse it atleast 3 times. I mean I've done it 3 times so far 3-4k miles between washes. At some point I guess it would disintegrate ... but more than 3.
Both K&N's are pretty dirty, they send a lot of particulate matter into the intake. So if reuseability is the big draw for you, stay with stock and wash and run it.
Cool.
Buddha.
this is very true , how long do you want your engine to last ? the gs500 does not make that much more power with the lunchbox ............. Its your engine do what you want , however all my engines use stock airfilter works best for me . cool :thumb:
i had used a lunchbox on my first bike my 97 (first of five) that bike is still on the road strangely lol that bike i had punched the exhaust and put the lunchbox on. after a mild rejet she was awesome. you could hear the mill sucking air in.
I did most of my mountain years on my 97 GS in your back yard yammi screaming thru the twisties completely stock. I got the same 60-65 mpg Slack got stock except for the few days in the mountains each year and for a few days in Jan-Feb back home in NE OH when it dropped to 50-55 mpg in the cold.
I used stock oem air filters changing them at 30k mile intervals on both my stock GSs, never saw the point in modifying the GSs mill for the small power increase available in doing so. My 97 was totalled at 80k miles and my 02 was parked at 100k miles all done completely stock.
I took the Lunchbox way. My 2000 GS's stock power curve had a flat spot at 6-7k RPMs which dissapeared with the rejetting, and made my commute smoother. The filter gathers too much dirt, but makes the bike grunt low and nice, not annoyingly as HDs, and some throttle helps me to warn the cagers about my presence, when in slow traffic conditions and cagers changing lanes abruptly.