[GTMartin]

Let me know if you feel a performance increase.

 

[BlitzSchnell]

@AdamB if paper filter replacement is a hassle ……..
I’m not sure about regulations in England when it comes to solvents … if you can use a good chemical cleaning agent ..(usually chlorine based).. and an ultrasonic tank large enough to submerge your filter you can successfully clean and reuse your paper filters. I did this in the early 70’s many many times…. … I think we used CTC ( I think that was CarbonTetraCloride ) but any solvent that won’t melt the filter parts ..(plastic etc.).. and will then evaporate when the filter is removed from the tank will work. Alcohol … both Isopropyl and isobutyl alcohol will work as does white gas (camp stove fuel)… I think that is just filtered kerosene or JP5 … The chemistry you choose will need to be able to dissolve the grease and oil that will no doubt be abundant on the filter and allow the dirt to escape with out damaging the paper. FYI anyway, ……………… Cheers ………………………… Blitz

 

[AdamB]

@AdamB if paper filter replacement is a hassle ……..
I’m not sure about regulations in England when it comes to solvents … if you can use a good chemical cleaning agent ..(usually chlorine based).. and an ultrasonic tank large enough to submerge your filter you can successfully clean and reuse your paper filters. I did this in the early 70’s many many times…. … I think we used CTC ( I think that was CarbonTetraCloride ) but any solvent that won’t melt the filter parts ..(plastic etc.).. and will then evaporate when the filter is removed from the tank will work. Alcohol … both Isopropyl and isobutyl alcohol will work as does white gas (camp stove fuel)… I think that is just filtered kerosene or JP5 … The chemistry you choose will need to be able to dissolve the grease and oil that will no doubt be abundant on the filter and allow the dirt to escape with out damaging the paper. FYI anyway, ……………… Cheers ………………………… Blitz

Thank you @Blitz. You are, as ever, a diamond mine of information. Without you and others on this forum, I’d have no idea what I was doing and no confidence to attempt any modifications of the bike.

 

[Kowalski]

Let me know if you feel a performance increase.

there is none

 

[BlitzSchnell]

The benefit, as I understand it, is significantly improved airflow in to the combustion chamber. What I don’t understand is (i) how the engine knows to adjust the fuel flow to match it, and (ii) whether the increased airflow comes at a cost, for example perhaps engine wear through less efficient filtering out of dust/dirt?
The DNA filters are washable so you don’t need to replace them like paper filters.

@AdamB .. our fellow rider and Mate @Kowalski is spot on …. The CanBus (as I understand it) uses the exhaust oxygen sensor ..(on the exhaust pipe).. to determine if the current gas/oxygen mix is efficiently being burned … if it’s not then the duration signal to the fuel injector is modifyed accordingly and the fuel mix is enriched or leaned out. The logic is: if the airflow is further un-restricted by the use of a more open filter element than the stock one it’s possible to pack a bit more air into the cylinder each stroke … more air more fuel more power. The logic is sound and I’m sure there is dyno-data somewhere to back it up … but I’m also pretty sure unless your tuning a competition bike for a race the amount of gain in power will be very small for what it costs to get there. When competing for prestige and prize money to survive ..ever HP counts. When making a run to the deli for a sandwich … not so much ………Bon appetite’ ………………………………. Blitz

 

[Baloo]

15 dollars every 12 miles is well within my budget.

 

[AdamB]

I’m hoping that the biggest improvement I can make to the bike is the rear shock. I did try with the OEM stock, adjusting it. But for me the spring is just too stiff.

Thanks to all the contributors on the forum, I decided on a Wilbers with the ride height increased and adjustable.

 

[BlitzSchnell]

That box looks like the shock was shipped in a Down Comfort Blanket …. Is that a “Posture-Pedic matrice/box” wow, great visual pop ! Clean machine man. Pretty pretty …………………………………………………………………………… Blitz

 

[Skepa122]

Interested in your review of the rear shock. Looking at Ohlins, Wilbers, Matris, Nitron myself and think it will come down to price. They all seem good.

 

[AdamB]

Thanks @BlitzSchnell . I’d like to say that I can eat my dinner off my bike. But i’d probably die of bike polish poisoning.

The roads round here (London) are still covered in grit and crap so I’ve not ridden it yet. @Skepa122 - I’ll post a report when I do get out and about.

In the meantime, more buffing the bike …