Performance Air Filters: A boon or a pain

[jatin_cbz]

one question people. where to fit the filter..
in the box or directly to the carb....???
and what are their illeffects or advantages.
vese each individual is having his own opinion
but dont knw whom to beleave.....

[maveric]

Informative.....!!!

[inder.cool]

@Inder - I wonder how at all you could conclude that a
freeflow airfilter will tamper the fuel efficiency. Well its not.

With the right AFR and with the increase in the the charge volume entering the engine, it will indeed improve the over fuel efficiency.
But the reality is that, almost all have no clue what they are doing with the AFR and there is no specific jet size which will work optimum for an engine at every point of time. So the engine will end up running either richer or much leaner than needed, which means its not stoich. In most cases, people end up revving their engine for the new thrills found with the Induction roar and loose the fuel efficiency.

I wrote that due to the fact that, if the amount of air coming in increases(with the installation of the free flow air filter) then some tuning needs to be done to the stocks as those have been configured/set as per the factory settings. So, if we let more air come in and keep the carb with the stock jets then the engine might get over heated due to the lean mixture.
So, in order to take overcome this, one has to upgrade the jet size,which would lead to more fuel coming in for combustion. Which in turn would lead to lower fuel efficiency.

[moeed]

^^ Thanks for sharing the info bro!

[Joel]

So, in order to take overcome this, one has to upgrade the jet size,which would lead to more fuel coming in for combustion. Which in turn would lead to lower fuel efficiency.

Thats basic common sense. If you dont change the fuel mixture after a filter install its bound to turn lean. However its no fault of the filter that you claim to lower the fuel efficiency. Its the owner!
NO point in blaming something that you are goofing with.

@samarth - Dude, AFR is air fuel ratio. It can be changed on an FI or a carb engine, electronically and mechanically respectively. How does that matter if its India or USA?
Lets not talk about badly maintained stock engines, like in this case yours. I am talking about efficiency at its full potential.

[Samarth 619]

Thats basic common sense. If you dont change the fuel mixture after a filter install its bound to turn lean. However its no fault of the filter that you claim to lower the fuel efficiency. Its the owner!
NO point in blaming something that you are goofing with.

@samarth - Dude, AFR is air fuel ratio. It can be changed on an FI or a carb engine, electronically and mechanically respectively. How does that matter if its India or USA?
Lets not talk about badly maintained stock engines, like in this case yours. I am talking about efficiency at its full potential.

^ Bro, I know AFR, but my point was that we don't have accurate indicators of AFR when we upgrade to new air filters.
Plug color, heat, and some other rough indicators... That's it!

Anyways, Could you please answer my query about Karizma ZMR?

It's PGM-Fi does have an O2 Sensor, so can it take an K&N Filter and adjust AFR automatically for high performance?

[revtech]

Pros:

1) Increased power - due to faster fuel combustion.
2) Increased filteration of air coming in.
3) Less maintenance required.
4) Not required to change at lesser intervals(can consider cases of Fi bikes).

point 2 is incorrect.it doesn not increase filteration of air..

[samarth14feb]

I have been using K&n r1100 on my 05 model ZMA(tuning was changed after installing filter). I am very happy with its overall performance. t has a combination of a smooth engine and good fuel efficiency(37 to 44). i never had heating problems though i ride in long stretches up to 200kms non stop at 80Km/hr. my Plug colour is of 'Light Rust' colour. Is there still a necessity to upjet my bike ?