29-08-25, 05:43 PM (This post was last modified: 29-08-25, 05:56 PM by Gnasher.)
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 date I've not seen anything about how bad as you're telling us. Only certain people's preferences for whatever reason. I've had loads of owners over the years slating K&N and other pre oil filters, be they cloth or foam. In every case I've had, it's either over/under oiling or cleaning wrongly or not cleaning.
I have had some poor experiences with the foam types for fit and quality and reusability. Never fitted a DNA, which from a quick look appears to be a direct copy of a K&N.
(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?
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 (This post was last modified: 30-08-25, 07:46 AM by vitman.)
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 (This post was last modified: 30-08-25, 12:50 PM by Gnasher.)
(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, 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.
Your priority should definitely be getting the EXUP working, this will make the bike so much better below 5000rpm.
30-08-25, 07:17 PM (This post was last modified: 02-09-25, 08:56 AM by b1k3rdude.)
(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.
100% exup first.
(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.
31-08-25, 10:01 AM (This post was last modified: 31-08-25, 10:09 AM by Gnasher.)
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"
31-08-25, 10:37 AM (This post was last modified: 02-09-25, 08:56 AM by b1k3rdude.)
(30-08-25, 07:17 PM)RMT1983 Wrote: There's the poor quality k&n pod filters.
Those filters are clearly counterfeit, Where did they come from? Also K&N don't list pod filters for the FZS1000 period, and now dont list ANY air filters for the FZS either.
31-08-25, 11:27 AM (This post was last modified: 31-08-25, 01:56 PM by RMT1983.)
(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.
Ivan told me they were now a poor design, I for some reason I just didnt believe it so I purchased some for myself. Sure enough, ivan was correct.
So I got the bmc instead, for my fzs1000. Im sure you've seen my bike on other forums etc.
(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"
They were returned in January very quickly after they arrived. And you seem to have ignored the link to the video of the rattling k&n....
I smell someone who just likes to argue and be right 100% of the time.
You asked for proof and got proof, now you've changed your course of argument. What a guy!
Thanks... I absolutely love the motorcycle. Both its looks and the riding position are perfect. The fuel consumption is insane, of course, but it's more of a passion project. There's no point in counting pennies for fuel. Since I'll be taking the carburetors off anyway, I think it would be a huge mistake not to install an Ivan's jet kit with new rubber gaskets. I'll also refurbish the EXUP system while I'm at it. I'm almost afraid to imagine how the bike will run after all this!)
When I first started doing Full Monty installations, I used K&Ns but found that most needed to have the flange reduced with a Dremel to get them to fit in the airbox. Nothing major but an irritant. Nothing to do with owners mangling airboxes - just a manufacturing issue at K&N.
After a while, I switched to using BMC filters as these were supplied to me by Ivan's UK/EU agent back then. Very good quality, perfect fit.
(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?
01-09-25, 12:33 PM (This post was last modified: 01-09-25, 12:35 PM by Gaz66.)
(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.
..........................
If you Google FZS1000 airbox mod, my pics come up, obviously I'm now famous ?
Will the exhaust manifold and EXUP valve from Yamaha YZF r1 00 01 fit my Fazer 1000 ??
