1997 e36 328 - more horsepower help

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  1. 1997 e36 328 - more horsepower help 
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    beanfield's Car Details
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    i pick up my first bmw next week its a e36 328 coupe just wounderd if any one has any tips on some good mods for the engine. it has a coustom power flow exhaurst but that is it
     
     

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    Go for the big bore throttle body, 325 manifold (i think) and remap should see 230 bhp and awesome sounds!
     
     

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    mikaveli (02-04-2009)

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    This is a really common question. Do a search and you'll find all the info on the mods.

    M50 Manifold, Throttle Body and Remap.
    'US' M3 Cams.

    Doing much more than the above will start to cost serious money. Induction kits etc normally aren't worth the cash.

    Check out superchips website, there's a pdf dyno graph of the 328, look how much torque drops off after 5.5k rpm - it's all because of that restrictive manifold...
     
     

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    Quote Originally Posted by mikaveli View Post
    This is a really common question. Do a search and you'll find all the info on the mods.

    M50 Manifold, Throttle Body and Remap.
    'US' M3 Cams.

    Doing much more than the above will start to cost serious money. Induction kits etc normally aren't worth the cash.

    Check out superchips website, there's a pdf dyno graph of the 328, look how much torque drops off after 5.5k rpm - it's all because of that restrictive manifold...
    Good advice by the guys above

    If you want a filter then keep the original air box and replace with an upgraded panel filter. You will see this mentioned many times throughout the forum

    Visit the Tuning section of the forum for advice on remaps as we have experts who frequent the section who's advice is sound
     
     

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    thanx for the advice
     
     

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    RYM (03-04-2009)

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    Just noticed this thread was in the wrong section. I have now moved it to the tuning section
     
     

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    The 328i does have a restricted inlet manifold to keep the power below 200bhp. Replacing the inlet manifold to one from the 325i along with a decent remap and induction kit will give roughly 230-240bhp.

    Below is a plot from a 328i I did a few years ago, you can see how the bhp climbs all the way to the red line without tailing off. This is achieved by the larger inlet manifold and throttle body. Torque curve is also flat all the way to the red line.

    I can get hold of the inlet manifold and throttle body conversions, if you want more info drop me a pm

    Totally different car to drive

     
     

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    Sorry to jack the thread...... Is it worth getting a panel filter for performance then? Does it make much difference?

    Thanks

    Charlie
     
     

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    I was alway under the impression that standard air boxes restricted the cars air in take and that a cone filter didnt 'strangle' the car with regards to getting a good air supply.I know that the cone filters are subject to drawing in warm air from under the bonnet but this can be over come?I had a civic VTI with a k&n and a boost valve fitted and on the dyno it was up on horse power,all be it not a lot but didnt loose any?!Incidently i dont rate they power boost valves at all!!If you have them set to high you can blow the fuel rail and your emissions can run to high for an MOT,so they have to be set to a more or less standard setting anyway!!
     
     

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