(29-08-25, 05:43 PM)Gnasher Wrote: I can only say/report what I've seen and to date I've not seen what your telling us.  I also think if it was as bad as your saying it would be on many a bike forum, again I'm on many to seen anything about this.

Show us your evidence?

(29-08-25, 05:53 PM)RMT1983 Wrote: Videos are difficult to upload to here due to size restrictions

(29-08-25, 05:53 PM)RMT1983 Wrote: Videos are difficult to upload to here due to size restrictions.

K&n - poor quality materials, dont fit and rattle around. Not what they used to be.
Pipercross -, cheap, poor quality materials, coating on the metal to the filters comes away and works into the engine.
DNA - the tightest fitting filters I've ever witnessed. Mmmm love em.
BMC - Look s*xy and fit well! Downside, Italian and can take forever to arrive and expensive!

(30-08-25, 06:56 AM)vitman Wrote: As far as I understand, the +4° ignition advance mod works well on a completely stock setup. With tuning kits, it’s not really relevant.
Right now my budget is limited. Could you please advise what would be better to do first for the next season – restore the EXUP system or install the Ivan’s kit?
I’ll have to go into the carbs anyway (to clean them).
The EXUP system will cost me about €300 with shipping, while the Ivan’s kit is around €200.
I don’t really want to spend money on both at once. I ride about 80/20 city/highway.

(30-08-25, 06:56 AM)vitman Wrote: As far as I understand, the +4° ignition advance mod works well on a completely stock setup. With tuning kits, it’s not really relevant.
Right now my budget is limited. Could you please advise what would be better to do first for the next season – restore the EXUP system or install the Ivan’s kit?
I’ll have to go into the carbs anyway (to clean them).
The EXUP system will cost me about €300 with shipping, while the Ivan’s kit is around €200.
I don’t really want to spend money on both at once. I ride about 80/20 city/highway.

(30-08-25, 12:49 PM)Gnasher Wrote:

(29-08-25, 05:53 PM)RMT1983 Wrote: Videos are difficult to upload to here due to size restrictions.

K&n - poor quality materials, dont fit and rattle around. Not what they used to be.
Pipercross -, cheap, poor quality materials, coating on the metal to the filters comes away and works into the engine.
DNA - the tightest fitting filters I've ever witnessed. Mmmm love em.
BMC - Look s*xy and fit well! Downside, Italian and can take forever to arrive and expensive!

I have on occasion had issues fitting filters including K&N, in all cases it wasn't the filter that was the issue but owners butchering or having damaged the standard air box.  Or trying to force trumpet filters non standard/standard carbs with insufficient space.

As mentioned earlier, if this was as bad as you're telling us. It would be all over forums including car forums, possibly even mentioned in the motorcycling/car press. I've not seen anything directly stating quality issues, only personal preferences. 

I know of a fair few who are heavily into racing in all its forms.  Many of those use K&N none have told me there is any issues of fit or quality.

(30-08-25, 12:18 PM)Grahamm Wrote:

(29-08-25, 05:53 PM)RMT1983 Wrote: Videos are difficult to upload to here due to size restrictions

You could always upload them to YouTube and share the links.

(30-08-25, 07:17 PM)RMT1983 Wrote: There's the poor quality k&n pod filters.

(31-08-25, 10:37 AM)b1k3rdude Wrote:

(30-08-25, 07:17 PM)RMT1983 Wrote: There's the poor quality k&n pod filters.

Those filters are clearly counterfeit, Where did you guy them from? Also K&N don't list pod filters for the FZS1000 period, and now dont list ANY air filters for the FZS either.

- https://www.knfilters.co.uk/yamaha/fzs1000-fz1/1000/2001/

@Vitman - as this is a fazer specific forum, what's the name of this "seller" on ebay?

(31-08-25, 10:01 AM)Gnasher Wrote: They look like Chinese knock offs, those I've seen plenty of.  Genuine K&Ns are much redder i.e. more of their red oil they look over oiled in fact straight out of the box, they're also not in the cheap cellophane crisp packet type bags, they're in proper quality poly bags with EU warnings etc.  I'm smelling a rat here! Like the DID chains, NGK plugs, EBC pads that fooled many a retailer some years ago.  If those are genuine, then just return them and I'm certain K&N will replace them and investigate.

I've forwarded your post to K&N importers and to K&N Engineering in the US who make them.  if this is poor manufacturing or knock offs they need to know.  I'm sure you've already done that?  But nothing wrong with "being sure to be sure"

(29-08-25, 10:39 PM)Gaz66 Wrote:

(29-08-25, 06:16 AM)vitman Wrote: Thanks for your reply. I’ll restore the EXUP, set the ignition advance to +4°, and repair the carburetors. After that I’ll start thinking about tuning.

Could someone advise on replacing the fuel filter? It’s located inside the tank. Are there any equivalents from MANN or Knecht that I can easily buy in Europe and that will fit, or is OEM the only option?

Washable gauze strainer inside tank on the petcock or fuel tap as we call em in the UK, buy a tap service kit first to future proof it.

The actual fuel filter is an inline type, located behind right side panel (under right leg when sat on the bike), use a Genuine filter, most pattern filters use the wrong diameter outlets, replace it annually to avoid carb blockages.
Re: Air filters, Genuine Yamaha paper filter, or a quality pattern paper filter like Hi-flo is the best option imho.
Washable filters, K&N etc aren't the quality they once were, Sprint filters are better made, Pipercross are crap, bits come off em & go thru the carbs.
My bike's got an Ivans MB kit, ported carb rubbers & modified airbox lid, sports exhaust can & it defo idles & runs better with a paper filter, butt dyno can't tell the difference from paper or washable, i was constantly fiddling with the idle settings with a washable filter, idle was all over the place.
Fitted a Genuine Yam paper filter, bike runs & idles better.

Some fit a 4 degree advance rotor, made my bike unrideable below 3,000rpm, never again.

(01-09-25, 11:23 AM)fazerscotty Wrote:

(29-08-25, 10:39 PM)Gaz66 Wrote:

(29-08-25, 06:16 AM)vitman Wrote: Thanks for your reply. I’ll restore the EXUP, set the ignition advance to +4°, and repair the carburetors. After that I’ll start thinking about tuning.

Could someone advise on replacing the fuel filter? It’s located inside the tank. Are there any equivalents from MANN or Knecht that I can easily buy in Europe and that will fit, or is OEM the only option?

Washable gauze strainer inside tank on the petcock or fuel tap as we call em in the UK, buy a tap service kit first to future proof it.

The actual fuel filter is an inline type, located behind right side panel (under right leg when sat on the bike), use a Genuine filter, most pattern filters use the wrong diameter outlets, replace it annually to avoid carb blockages.
Re: Air filters, Genuine Yamaha paper filter, or a quality pattern paper filter like Hi-flo is the best option imho.
Washable filters, K&N etc aren't the quality they once were, Sprint filters are better made, Pipercross are crap, bits come off em & go thru the carbs.
My bike's got an Ivans MB kit, ported carb rubbers & modified airbox lid, sports exhaust can & it defo idles & runs better with a paper filter, butt dyno can't tell the difference from paper or washable, i was constantly fiddling with the idle settings with a washable filter, idle was all over the place.
Fitted a Genuine Yam paper filter, bike runs & idles better.

Some fit a 4 degree advance rotor, made my bike unrideable below 3,000rpm, never again.

@Gaz66 - do you have any good pictures of the airbox lid mod or even a drawing?

Cheers
fs.