1998 E36 328 - replacement Inlet Manifolds.

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  1. 1998 E36 328 - replacement Inlet Manifolds. 
    #1
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    Now I have done a bit of research and I thought you guys might be able to help.

    i have heard that the 325 manifold has a much wider air intake than the standard 328 one and that if I replaced my manifold with this, I could increase my BHP by up to 30.

    Is this true? If so does anyone know where i can get a 325 manifold from, how much and are there any other parts that need to come with it.?

    I saw one on ebay a while back for £80 was this a good price?
     
     

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    #2
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    IIRC there is one being advertised as needing a new home in the For Sale section

    Just saved you the time of searching for it

    http://www.bimmerforums.co.uk/forum/...anifold-t6681/
     
     

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    Ian S (16-02-2009),mellybmw (09-02-2009)

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    #3
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    Wont be buying it just yet
    Was just a heads up for future plans.

    Also my car currently has a Gruppe induction kit on it, which is about the size of my head.
    Is this any good, its carbon fibre, thats all I care about lol. (was on the car when i purchased it)
     
     

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    http://www.team-bar.com/diy_m50manifold.htm

    This tells you how its done, it is not as straight forward as one off and new one on but its not far off. Its probably an Idea to get the car remapped after you change the manifold, and if you are going to do this you might as well smooth out the throttle body first. You should be able to get up to 40Bhp.
     
     

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    do it as a kit, buy all the stuff you need in one, so that manifold, throttle body, remap, cold air intake etc, collect all the bits and then arrange to have the car of the road for a few days and get it sorted in one, since you are going to goto that kind of effort its well worth doing a complete overhaul on all the fluids aswell, the power difference if done this way will be shocking as its a huge lump of extra power in one and it will be well worth the effort, might be an idea to upgrade brakes/suspension etc at the same time.
     
     

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    Hang on im confused..

    What is the M50 manifold?

    I already have a 328, dont I need a manifold from a 325?
     
     

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    M50 is the engine code for the early 6 cylinder engines. Your 328 engine is an M52. Just make sure you get the manifold from a 325i with the M50 2.5 engine.
    Just to confuse you more there is a 2.litre M50 engine. Avoid that manifold coz its smaller.
     
     

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    #8
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    LMao.. Ok thanks think I got that.

    Man its not going to be fun finding this lol. When I ever get round to it!
     
     

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    Like someone else said, when you are ready just buy the whole kit. It makes life so much easier having everything you need rather than hunting around for various bits.
     
     

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    Thanks alot
     
     

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