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  • Air filter replacing query

    Hi Guys,
    Today I just bought a new VW air filter, as trying to improve the fuel consumptions. After it replaced, I can feel quicker responce in acceleration and even in engine speedometer increased from normal 800 to 850 rpm. Is this normal, as clean air filter allowing more fresh air into engine? Or I need a computer hooked up to check the engine status, just in case in-correct installation?
    Thanks.

    Tao

  • #2
    Get the throttle body adapties reset if your worried. other than that i wouldnt worry.

    Comment


    • #3
      your old filter nust have been very dirty (assuming the new filter is a standard paper one). I wouldnt worry about it. If you take the filter out completely it would go even better, but dont do it The car breathes better with the new filter
      1991 BMW 318is RED E30

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      • #4
        Funny enough I have done a couple of runs without the filter in.
        You can hear more air been sucked in and the stock diverter valve is way louder.

        A new filter will definetely give you a better response - I would suggest the K&N panel air filter - lifetime warranty as well.
        2001 MK4 Golf GTi

        Oettinger chip | Modified stock airbox | hungry for more power...

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        • #5
          If you go for K&N make sure its far from the MAF sensor. I had an aftermarket POD for about 2 months and it blew the MAF. Apperently it doesn't like the oil that is on it
          1991 BMW 318is RED E30

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          • #6
            Well.. the aftermarket K&n panel filter just sits in the stock air box. So either way, its in the same position as the stock panel filter.
            2001 MK4 Golf GTi

            Oettinger chip | Modified stock airbox | hungry for more power...

            Comment


            • #7
              ok guys,
              thanks for the input.
              I will make sure next time when I replace the air filter, use a K&N instead of the VW one. It seems nothing to worry about. My concern came from the fussy filter box, not as easy &simple to install as my camry clips install. I just worried error installation may cause problem rather than improve the performance.
              I will keep an eye on the fuel consumption anyway, thanks guys for the support again.

              Cheers,
              tao

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              • #8
                Dont use air filters that use oil. I did and it blew my MAF. Go with the stock units.
                *** It's Only a Car ***

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                • #9
                  Originally posted by nkoulban View Post
                  Dont use air filters that use oil. I did and it blew my MAF. Go with the stock units.
                  is this due to over oiling the filter element?

                  getting my filter replaced in my major service next week and was going to get a K&N, but now im not so sure....
                  1999 MK4 GTi 1.8T - Custom Code Stg 1, ECS Stg 1, 14lb Fly, 18" A8's
                  ''Jap cars pull the G-Forces... Euro cars pull the G-Strings...''

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                  • #10
                    The oil in the filter can contaminate the element in the MAF. They can still fail with a paper filter so it's just more likely with an aftermarket filter. I have fitted a green cotton one to my Audi and if the MAF dies, I'll fit a new one.

                    Gavin
                    optimumcode@gmail.com | https://www.vwwatercooled.com.au/for...i-;-79012.html | https://www.facebook.com/TTY-Euro-107982291992533

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                    • #11
                      heres a link with some more information, generally points to oiled filters posing no harm to our poor MAF sensors, although i highly doubt that K&N would make such an effort with test results saying that their filters are crap...

                      interesting though...

                      K&N addresses MAF (Mass Air Flow) concerns and explains what really happens when oil gets on a MAF sensor. Click to read more.
                      1999 MK4 GTi 1.8T - Custom Code Stg 1, ECS Stg 1, 14lb Fly, 18" A8's
                      ''Jap cars pull the G-Forces... Euro cars pull the G-Strings...''

                      Comment


                      • #12
                        Originally posted by HOLEIN1 View Post
                        heres a link with some more information, generally points to oiled filters posing no harm to our poor MAF sensors, although i highly doubt that K&N would make such an effort with test results saying that their filters are crap...

                        interesting though...

                        http://www.knfilters.com/MAF/massair.htm
                        That really is K&N putting their money where their mouth is. I wonder if this would hold up over here...?
                        I never had a problem with my last cars MAF and the oiled filter I used (a BMC panel replacement filter), and I tended to over oil it.
                        "If can't get behind your troops, feel free to stand in front of them..."

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                        • #13
                          Really K&N units are not worth it in my opinion - the stock unit is pretty large and I doubt any restriction to flow.

                          I've had a K&N on a turbo car and for the cost the gain is nil or close to nil.

                          YMMV.

                          Keith

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                          • #14
                            Originally posted by 4m0ti0n View Post
                            Really K&N units are not worth it in my opinion - the stock unit is pretty large and I doubt any restriction to flow.

                            I've had a K&N on a turbo car and for the cost the gain is nil or close to nil.

                            YMMV.

                            Keith
                            you may put money on petrol along with it?

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                            • #15
                              My K&N filter is at the end of the CAI, all the way down in the front bumper. I had it for at least 6 months and i haven't had a problem yet. so they could be right
                              All i know is that i will be keeping my filter coz it works great for me
                              1991 BMW 318is RED E30

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