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Hey friend, im having a pulsar 180 since 5 yrs. it has an K&N air filter. since few days while riding the bike it suddenly starts to loose power like when the petrol gets empty,the same way it happens. sometimes it does not starts only and after many attempts it finally start. the mechanic guys told me that its due to the air filter as its open and dust particles gets collected in it. but the air filter is since 2yrs and till now i didn't face any problem like this. so guys pleas help me out,should i change the filter or wt should i do ????
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Life looks Good in Blurr -
Query approved.(Been There Done That) x 3.25
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there are surely advantages but there are alot of disadvantages of K&N which u dont observe immediately but lately which u r already going through ur mechanic is exactly correct,air filters are designed and made considering the over all performance of the engine people just carried away with unwanted modification's and result in screwing up the engine.
finally one suggestion remove the K&N and start riding on theh stock air filter and enjoy long life of the engine and be maintenance free guy
my personal opinion to u,depends upon person to person take care and ride safe 
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Get rejetting done, upjet with appropriate jet size. Your bike is running too lean that is causing the backfire.
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thnaks for your valuable advice RX88. the thing i liked in my K&N was that i get good instant pick up and nice sound from that. my mechanic said tat i need to cover the air filter to prevent this prob i.e i should cover the filter with the stock filter case keeping the K&N as it is. so wats your take on this ???Originally posted by RX88 View Postthere are surely advantages but there are alot of disadvantages of K&N which u dont observe immediately but lately which u r already going through ur mechanic is exactly correct,air filters are designed and made considering the over all performance of the engine people just carried away with unwanted modification's and result in screwing up the engine.
finally one suggestion remove the K&N and start riding on theh stock air filter and enjoy long life of the engine and be maintenance free guy my personal opinion to u,depends upon person to person take care and ride safe Life looks Good in BlurrComment
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will rejetting have any effect on pick up or mileage ???Originally posted by abhichotu.abhi View PostGet rejetting done, upjet with appropriate jet size. Your bike is running too lean that is causing the backfire.
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Yes, pick-up will increase and the mileage will decrease. For k&n most of the times upjetting is required. Go to a appropriate mechanic who knows what upjetting is and tell him to upjet for k&n.Originally posted by farru View Postwill rejetting have any effect on pick up or mileage ???
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ok bro. will find out who can do itOriginally posted by abhichotu.abhi View PostYes, pick-up will increase and the mileage will decrease. For k&n most of the times upjetting is required. Go to a appropriate mechanic who knows what upjetting is and tell him to upjet for k&n.Life looks Good in BlurrComment
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If the mechanic doesn't understand what exactly upjetting is then just tell him that carburettor ka jet bada karneka hai and he will do it.Comment
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hmmm...hope he knws it. so around hw much the mileage will decrease bro ?Originally posted by pavanchirmade View PostLife looks Good in BlurrComment
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That will depend on how you ride. But, 5 kmpl or more decrease will be obvious.Originally posted by farru View Post
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then ill be getting around 35kmpl i guess. hey bro..is it worth it ?Originally posted by abhichotu.abhi View PostThat will depend on how you ride. But, 5 kmpl or more decrease will be obvious.Life looks Good in BlurrComment
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As you have already fitted k&n and want good performance from it then you will have to up-jet. No other option. If you want good performance with current jet size then switch to stock setup i.e. air filter.Originally posted by farru View Post
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then ill be getting around 35 kmpl. by the way bro...is it worth ?!?!Originally posted by abhichotu.abhi View PostThat will depend on how you ride. But, 5 kmpl or more decrease will be obvious.Life looks Good in BlurrComment
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I have already answered this. Anyway, if you can bear mileage drop thne it is worth. For normal commuting job k&n is not worth the price.Originally posted by farru View Post
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