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Thread: K&N Air filter install

  1. #1
    Standard Member Frank-RR's Avatar
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    K&N Air filter install

    Hi Guys, I have the above filter to replace to my "M", I am going to (well maybe) attempt myself, I looked at a couple of vids, but, earlier models, no sure if the set up is still exactly the same, but didnt, show a reassemble, so no torque settings if required, questions:

    the removable cover on the tank cover, is there a torque for the "bolts"

    is it necessary to remove the ECU

    is there anything else that maybe required to be removed.

    cheers

  2. #2
    Forum Moderator alex's Avatar
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    Re: K&N Air filter install

    If its like the Gen3 you have to lift the ECU to access the airfilter

    - Alex

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  4. #3
    Standard Member Frank-RR's Avatar
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    Re: K&N Air filter install

    Thanks Alex, yeah the vids were Gen3, I was just wondering if there is anything else been added to the Gen4 layout

  5. #4
    2 YEAR PREMIER MEMBER bricrewe's Avatar
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    Re: K&N Air filter install

    I had mine fitted when I took it to the dyno. First time I've owned a bmw so can't compare to previous models, looked simple enough when airbox was off took seconds to swop

  6. #5
    2 YEAR PREMIER MEMBER JamieMac's Avatar
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    Re: K&N Air filter install

    Guys, please bear in mind, I'd recommend disconnecting the battery before disconnecting the ECU. One of the ECU connectors is fine disconnecting with the battery connected but the other isn't. You can move the ecu out of the way with the one that's ok disconnected but I've seen people forget to turn the ignition off and then it's fried ECU with either connector. Disconnecting major things like ECU's isn't worth the risk.... disconnect the battery. Plus the central aisle of LIDL are doing fire extinguishers for less than £12 if you prefer. IMHO J
    Last edited by JamieMac; 30th July 2020 at 03:34 PM.

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  8. #6
    2 YEAR PREMIER MEMBER JamieMac's Avatar
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    Re: K&N Air filter install

    Sorry if I always sound like a moaning milly... just passing on experience.

  9. #7
    Forum Moderator alex's Avatar
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    Re: K&N Air filter install

    I thought it was going to be a rant about the pointlessness of aftermarket airfilters to be honest, so that was refreshing

    The bike makes 206Hp with the stock filter, it's not an issue....

  10. #8
    2 YEAR PREMIER MEMBER JamieMac's Avatar
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    Re: K&N Air filter install

    I remember a friend of mine and a fellow racer was racing at the TT. He couldn’t be bothered to take the seat off to charge the battery (std at the time no alternator) So he ran an extra feed off the positive battery which he tapped out of the way of the frame. So when he wanted to charge the battery he connected the positive of the charger to his positive ‘extension’ and the negative to the footrest. I gave him a slap...
    Never underestimate the stupidity of the human race. J

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  12. #9
    1 YEAR PREMIER MEMBER GavD101's Avatar
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    Re: K&N Air filter install

    Quote Originally Posted by Frank-RR View Post
    Hi Guys, I have the above filter to replace to my "M", I am going to (well maybe) attempt myself, I looked at a couple of vids, but, earlier models, no sure if the set up is still exactly the same, but didnt, show a reassemble, so no torque settings if required, questions:

    the removable cover on the tank cover, is there a torque for the "bolts"

    is it necessary to remove the ECU

    is there anything else that maybe required to be removed.

    cheers
    I've just bought a Sprint Filter for mine. I have good results with my last one, i don't think it added any performance but throttle response was noticeably improved. Anyway I'd imagine it is similar to the Gen 3 as the others have said, you lift up the ECU but do not disconnect and slide out the air scoop up and out the way. You can then unclip the airbox and pop the filter out. I will stick the filter in later today and update you with some images.

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  14. #10
    Standard Member Frank-RR's Avatar
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    Re: K&N Air filter install

    Thanks Gav, so i got as far as taking out the most obvious top 5 bolts, BUT, the over appears to be “stuck” it didnt move, i am always afraid that i snap(done it before on other bikes) the hidden plastic clips that always appear to be so fragile and snap before you know it.

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