I didn't like the cost of an air filter also. I got a K&N foam filter.It's in my CBR900RR so it did lean it out tremendously. It has much greater air flow, shouldn't be a prob with fuel injection though. K&N says they should outlast your motorcycle, about 1,000,000 miles. And it's only $20 more than the stock filter. Kalikikopa ------------------------------------------------------- > Hi, There is definitely cause this time though. I'm looking for aftermarket air filters for my GTS, since stock set is something like $60. I havebought stock ones 3 times already; enough is enough. Has anyone had any luck with this? Compressed air works, but only a few times. I took the rubber snorkles going into each side of the airbox and turned them around so that the curved end goes up into the airbox. Then I bought a couple of short Uni washable filters that go over the ends of the snorkles with a hose clamp! Works as good or better than stock & is a whole bunch cheaper! Bob Taylor,gtsbiker -------------------------------------- > How much should Yamaha Air filters cost? My dealer quoted me $56 EACH!! I've heard that the filters can be clean using ultrasound bath. It only cost a few box. Richard Lanouette -------------------------------------- > Where does one get this done? and how does it work? > Louis $55 -$56 is the retail price. As for the ultrasound bath, take them to someone who cleans venetian (sp?)blinds. It's basically a water bath with a little mild detergent that is sonically agitated. Personally, I've never heard of using it to clean air filters. I liked the idea of replacing the stock filter media with some from K&N. _ o _ / = > Later, _ (_)==(_) Don ------------------------------------ From: Anthony Grafals Date: Tue, 30 Jun 1998 23:48:48 -0500 Subject: Re: gts-1000-digest V1 #123 I put four K&N stacks on the throttle boddies of the GTS. This required relocating the air temp sensor via a home made mount and use of a K&N crank case breather. However, the performance is noticeable and along with the carbon fiber slip on, it sounds "bitch'n." Also, the removal of the air box makes engine access a breaze once you get the fairing off. The K&N stacks are cleanable and individually replaceable. If you (or anyone) wants a photo of the installation, let me know and I'll send it off line. (K&N Part #RC-2490 Tapered Round w/Chrome endcap $20 ea.) ------------------------------ the GTS has a one of a kind air filter(s). There are no aftermarket replacement filters made. I turned the rubber intake snorkels around & attached a small Uni filter to each one where the stock filter would be! Bob Taylor,gtsbiker Hey All!! Just thought I'd drop a line to let you in on my latest findings. I decided to change the fuel filter and after looking through a bunch I ended up putting on a Purolater #F44661 which is the same dia. & just about an inch longer but still fits nicely for about $18. While I had everything off I decided to do something about the air filters too and after messing with quite a few I settled on a UNI #NU-4089 which I believe is for a '84-'87 Gold Wing! Hears the catch! You have to tear out the old paper & screen from the stocker & clean up the plastic thats left then cut the UNI about 3/4" on either side of center and you have two pieces that fit right in the stock housing! Add a little RTV around the edges, let'er dry & you now have new washable filters! Bob Taylor ------------ Subject: RE: Air Filters I think I mentioned this last year. I met a GTS owner in Andorra who works for one of the many bike shops there. He takes a K&N round filter. Cuts it in half. Then cuts about 1/8 inch off the end. He then uses a silicon sealer to reseal the end. You now have reusable GTS air filters. Mike Coan ------------------ From: "Anthony Grafals" Date: Thu, 1 Apr 1999 18:52:56 -0600 Subject: Air box design ba! humbug! The dyno proved that the only thing the air box did was choke the GTS down. By removing the air box and changing to K&N filters and replacing the stock can, I picked up 6 more horsepower at peak, and the curve is shaped identically to the stock curve except that it is smoother. We made 16 pulls with the GTS over a three hour span and each time, we never got results that varied more than one or two horsepower for a given configuration. The GTS was designed around a torquey, quiet concept. Performance was not the primary emphasis. To assume that the air box and the cannister were designed to somehow increase power is just fiction. The dyno proves it. And even if people don't want to believe the dyno, I knew it as soon as I rode the bike, as did George. - -------------------------------------------------------- >The air box is specially design. The two inside cylinders have longer intake to >give the GTS a >specific torque curve. Removing the air box would change that. --------------------------- From: "Michael Brown" Date: Thu, 15 Apr 1999 12:45:42 -0700 Subject: AIR FILTER This is a multi-part message in MIME format. - ------=_NextPart_000_006A_01BE873D.DF5CAC60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Yesterday I installed a foam air filter, and got rid of the 11 lb. stock = air box. It works very well. Seems to have more power. Plus, with the = air box out of the way I have more room to work on the motor. The filter I used is a UNI FILTER. (UP-4182 POD FILTER 1 3/4" ID X 4" = HGT). Mike