Any link on where to get one of these?

Well, I bought it from him, and I'm in Europe, so...
But I've just found this online: http://www.ridewill.it/p/en/champion-100604155-air-filter-suzuki-gs500-e/54743/
(You can change to USD in upper left corner.)

So heres and interesting update:

I contacted Hi-flo from their web page. They emailed back and acknowledged that GS500s can be finicky with the mixture on full open throttle with their filters. So, the filter I have is an HFA-3503, and they're going to send me an HFA-3604 to try that, so long as I give them feedback as to how well this other filter works.

I thought that was pretty good for a company to offer that up as well as wish to get the customers feedback of how well the alternate product works.

Hi-flo went up a couple points in my book!

Heck ya, that's pretty cool of them.  Keep us updated!



- Bboy

Ok!! Update:

I installed the HFA-3604, and it runs out quite well with that filter!

The 3503 filter has like a steel wrapping with small holes peppered in it, where as the 3604 has like a screen looking wrapping around it.. other than that they look identical, and you can certainly tell that it flows more air.

So as a recap, I went to a 20 pilot and left the mid mains and main jet alone, needles remain unchanged. bike also has stock exhaust. The pilot helped out alot on off idle performance and warm up time.
Its a good running little machine now.

The 3604 is listed for a 98-02 GSXR 750, incase anyone is wondering what its for.

Great! Appreciate the info - we've kind of been lost on why some folks have trouble with the HiFlo and others don't, so the general advice was to just steer clear of them.  Which is a shame because they are so much cheaper than OEM or K&N (with the added maintenance that goes along with that filter)  - perhaps this model number is just the answer with the different screen on it.

So HFA - 3604.  Gonna' commit this one to memory, for sharing later, and a possible replacement for my own in the future.

Thanks!

- Bboy

Yeah I was a bit dissappointed with Hi-flo for putting out a filter that didnt work.
But then I contacted the company and they recommended the 3604. Above and beyond that, they sent me one for free, and said "Try it out and let us know how it works for on your bike"
^ And that is worth its weight in gold right there. Superior customer care; it goes a Long long way!