Anyone use one of these air filters?

[user11235813]

https://www.ebay.com.au/itm/Uni-Air-Filter-GS500-GV700-GV1200/273941758563

I've been using the OEM filters but this is basically the same price but being reusable and easily washed and oiled will work out cheaper. I'm not sure if it is worthier the bother though also not sure if it would require any rejetting. I do not like the K&N filters btw.

[mr72]

I didn't follow the link but that looks like a Uni. That's what I have. Only done a couple hundred miles on it but no complaints so far. I have about 7k on the Uni in my Triumph and it's been brilliant.

I doubt it requires rejetting, but it's hard to say for sure since I was tinkering with jets at the same time I put this filter in. Uni flow numbers are similar to K&N or DNA but filtering performance is way better. But it does depend on oiling to some extent. Fwiw I have k&N oil in mine just because I had it laying around.

[Bluesmudge]

I have had a Uni filter in my GS500 for the last 4,000 miles after it was recommended by my mechanic. He did not like K&N filters.
I haven't ridden long enough to know if it filters as well as the stock filters or if oiling it becomes a chore.

The filter was installed after a top end rebuild and my bike was rejetted and dyno-tuned with the Uni filter and Jardine exhaust. No idea how the filter would perform with stock jetting.

[mr72]

I agree about not liking K&N filters. I picked the Uni for the Triumph after doing a lot of research on flow and matching it with a "tune" you purchase to flash onto the ECU, so I was trying to match the parameters that went into this tune. My research indicated that a Uni filter flows almost as much air as a K&N or DNA but has superior filtering to the OEM type paper filter. Best of both worlds.

That said, I don't think any drop-in filter K&N or otherwise will affect jetting very much. I am running 125 jets with mine and it seems fine, but there are other modifications that necessitate the one size bigger than stock jets. I doubt the air filter alone would require a whole step in jet size. It would only impact WOT and high rpm and my bike was too rich with 127.5 jets including the mods and the air filter.

[user11235813]

Okie dokie, useful information. I'll get one. I've already jetted a little bit richer than stock 20/60/132.5 with a stock muffler, so hopefully should be fine.

[The Buddha]

I like that hiflo filtro - this thing sometimes falls apart after a few years. Its also not as easy to clean as the hiflow filtro, which can be cleaned in gas. Its the same paper medium as stock with thicker perforated metal wall and thicker base.

Better yet, the hiflo filtro can be drilled at the end cap and wire tied back together, and when its filter material gets too worn out, you can do something and unglue the paper somehow. Then cut uni style generic foam and install it in there.
That makes for a filter you can take apart put new foam or clean the foam better with hand dishwashing soap etc.

https://www.hqpowersports.com/p/new-air-filter-suzuki-gs500-motorcycle-500cc-2003-2004-2005-2006/?gclid=Cj0KCQjwjer4BRCZARIsABK4QeVwtsaU3_WEnlUzi2etQ7U2v5ydqBFSknznU3aQAYVCfduP2GBqNLEaAqozEALw_wcB

That's the kind you want, not the one with thin mesh wall like the stock one.

Cool.
Buddha.

[user11235813]

Yeah the hi flo filtro is the one that I usually use, in fact I have one in the cupboard ready, but  I ordered the uni flo for next time. It's more dusty where I am now. I used to wash the hi flo filter in soapy water and dry them out. But I just got fed up with that, didn't want to take a chance on a hole that I didn't notice plus they last 12k kms anyway.

[The Buddha]

The paper is better washed in gas. Not water. But really you can unglue it (I think its something like hot glue) and now you have a filter that can be re packed with the Uni style green foam. Uni has fallen apart on me in the past both on the GS (end cap came off) and on others where the foam core collapsed.

I'm at some point going to have to try to separate it - my filter is almost new though.

Cool.
Buddha.