Question about 2003 Volkswagen Passat

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Filter for turbo Charger intake.

I was just wondering if I should change the filter on the intake for the turbo charger. If so, how do I go about doing so? Are there any potential problems or tricks to doing this procedure? when I do replace the filter, are there any reasonable performance enhancing replacement parts that I can consider? Thanks again. -RJ

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  • Ryan Smith Dec 19, 2008

    Thanks for your advice. I actually recently put in a K&N filter and have noticed an increase in power. It's amazing how well those things work. While I was under the hood I noticed that there was another open filter, air intake system in the driver-side front fender. I'm, of course, just assuming it is an intake for the turbo charger. Do you know what this is? Does it need to be changed?

  • Ryan Smith Dec 20, 2008

    That is possible. Although, it doesn't look aftermarket. The main part is located underneath the power steering reseviour. It's also partiallyunder the driver-side headlamp housing. I can't really make it out though. There is a, maybe 3", rubber hose running from the apparatus to what I think is the intake manifold. The hose is like a hose used for coolant, but larger. The "intake manifold" is a large light-colored, metal object. The hose attaches to one end, where there is a solenoid of some sort. The manifold widens and then splits into four and connects to the top of the engine block. Where the manifold attaches there is what I think is the fuel rail running over the top. Also, there are sensors or injectors plugged into where the "fuel rail" meets the "intake manifold". I hope that helps more. Sorry I can't be more descriptive. Maybe I can send pictures. Lol, Thanks. -RJ



    P.S. I heard that breathers may help with turbo lag. Is this true? Also, is a breather similiar to a blow-off?

  • Ryan Smith Dec 22, 2008

    Oh ya. I think it is the intercooler. I haven't had a chance to get in and really see what it is. Now that you mention it though, it makes sense. Thank you very much. The vehicle is petrol. I believe i can obtain a dump valve, but I'm not sure if I should. What is the point of having one? Does it reduce fuel economy?

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I assume you are referring to the air filter. Simply undo the large outlet hose and unclip the clips securing the two halfs. Once removed its worth giving the airbox a blow out. You will get a direct replacement K&N Type filter. This does have some performance benefits and is washable for the future.

Cheers John

Posted on Dec 17, 2008

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  • John Muir Dec 19, 2008

    Can't think what you are talking about. What is it attached to, where does what its attached to go and what size is it. Could it be an aftermarket breather filter? Better description required?

    John


  • John Muir Dec 20, 2008

    Could this not be the top of the intercooler you are looking at. If so its not a filter and is not a servicable item Is this petrol or diesel.

  • John Muir Dec 22, 2008

    If its a petrol you can fit a dump valve. This is a replacement for the standard item and vents it atmosphere as opposed to recirculating it back into the intake. They make a wicked noise everything you lift off or change gear. Don't know how available they are in the states, but I've got them on the shelf.

    Cheers John (from Scotland)


  • John Muir Dec 23, 2008

    No. It reduces turbo lag slightly.

    cheers John (from Scotland)


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