DNA air filter
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576 Posts
pix,dyno?
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175 Posts
I found it accidentaly in bangkok bike show.
got it installed 2 weeks ago. changes the bike a lot.
Better acceleration in all rpm ranges.
Better mid and top end, rolling the bike through the redline is a pleasure now.
Not a super change on lows though.
For 2400 thb _ 80 usd, good mod man. Just buy it.
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86 Posts
From recent discussions (http://www.cbr250.net/forum/cbr250-performance/1929-modded-update.html), it looks like the CBR has a closed-loop FI system, which would mean it would automatically adjust for an increase in air flow - most of the time. It sounds like start-up and WOT may be the exceptions.
Know that the reusable performance air filters will flow more air at the expense of filtering ability. You may gain some performance, but you are sacrificing filtering over an OEM-style paper filter.
Jay
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1,105 Posts
Like he said ^^ they will flow good but filter like a K&N. Meaning they don't filter worth a crap. everything I have ever serviced with a K&N had dirt and sand in the intake or throttle body. these are also filters that you oil correct?
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175 Posts
just ask him a discount redline.
By the way, a performance filter of course filter the air less and gets the life of the engine lower but it is minimal and i ll not keep my bike for my grandson at the end!
By the way, a performance filter of course filter the air less and gets the life of the engine lower but it is minimal and i ll not keep my bike for my grandson at the end!
They don't tell you that in their advertising. I've seen tests that show it's not minimal.
Jay
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175 Posts
Advertising.
In the last post you said " ...performance filter of course filter the air less..." and I said "...they don't tell you that..." and now you say it does.
Which is it? You can't have both.
Jay
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86 Posts
you can have a filter to let a faster rate of air thro and filter the same but will cost more to make so you make filters to what you can sell at.honda will use filters to cost bcs to keep cost down on bike and you have to buy replacement ones.
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175 Posts
Well jay.
I also know - mostly from forums, never seen an official report about it or any sand or dust in the engine before -as performance air filters filter less but they advertise this way , +99%, which is contrary to the belief and what you said.
So, to know the real truth, is there anything solid -not like something you heard in a forum - you can share with us to support your idea?
This way, we can find the truth.
dont get me wrong, it is not like for who is wrong who is right, just to know the facts about performance filters.
Maybe dna is lying who knows.
I tend to not trust advertising claims the most. When it says "99% filtering efficiency" - what does that mean? At what micron size is it filtering 99%?
Numerous studies that I've seen, and cross-referenced, have all said the same thing - you will sacrifice filtering ability for increased flow with that type of filter.
Search around, the real info is out there, just not on the manufacturer's sites.
Jay
Numerous studies that I've seen, and cross-referenced, have all said the same thing - you will sacrifice filtering ability for increased flow with that type of filter.
Search around, the real info is out there, just not on the manufacturer's sites.
Jay
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