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  1. e36 Scorpion exhaust 
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    Is it worth buying a full system for my 318, or is jus the cat back ok? iav got my eyes on the stw system will i recieve alot more bhp off the full system??? thanks for any replies
     
     

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    wouldnt say a serious gain in bhp, maybe 10-15bhp.

    A remap/chip will only see around 8bhp, then its debatable as to what gains an exhaust will get you. Not trying to put you off it though, your car will sound amaizing and be much better to drive!

    My advice would be to get just a cat back system, try it then think about removing the cat (a custom exhaust place can make up a decat pipe easy enough) and see if its any better.

    hth
     
     

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    Quote Originally Posted by dds789 View Post
    wouldnt say a serious gain in bhp, maybe 10-15bhp.

    A remap/chip will only see around 8bhp, then its debatable as to what gains an exhaust will get you. Not trying to put you off it though, your car will sound amaizing and be much better to drive!

    My advice would be to get just a cat back system, try it then think about removing the cat (a custom exhaust place can make up a decat pipe easy enough) and see if its any better.

    hth
    You won't get anywhere near 8 bhp from an exhaust let alone 10-15bhp

    If it's more power you are after then you should first look at chip/remap and a panel filter then exhaust. All of which will cost you in the region of approx £600ish and I would still be amazed if all this gets you 15bhp

    I spent approx a grand on trying to make my 318is coupe more powerful and ended up losing power

    I still stand by the fact that the most effective way to gain bhp per pound spent is to opt for the engine conversion route
     
     

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    A20 RYM; I stated the 10-15 increase if he went for remap and exhaust (still optimistic mind) Just wanted to clear that out so you dont think im a wally!!

    Another possible route would be a different diff?? not sure if that works on 318's though
     
     

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    de-catting will yield gains but it'll need to be replaced come mot time.
    bmw are one of the few firms that actually spend time making sure their exhausts flow well...good designers i would think.
    so an aftermarket exhaust is normally for cosmetic/aural reasons
    what i've felt,what i've known
    never shined through in what i've shown.

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    ye cheers 4 this iam just looking for a decent sound 2 it really bt no nova effort haha also 4 the looks 2
     
     

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    sorry to hijack, but are you saying on my 323 i would be better getting a good panel filter and re-map, but not really bother with the exhaust as the improvments arn't worth the money spent?
     
     

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    if you are looking for good power gains by just fitting an exhaust then you may be disappointed.
    saying that,your existing exhaust may not work as efficiently now its a few years old...so a more freely flowing new exhaust might get you a few extra ponies.
    factor in the deeper exhaust note and it'll seem to drive quicker too

    but these days engines are designed to operate very efficiently to maximise mpg and minimise emmissions...the days of the 15bhp janspeeds are long gone.
    what i've felt,what i've known
    never shined through in what i've shown.

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    if i was to look at an exhaust, then magnex would be the 1! perfect fits, super quality and great gains! well on my cav gsi anyway.
     
     

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    i had a magnex on my corrado vr6
    lovely burble with that zorst...and a great tailpipe.
    did hear tell magnex folded though
    what i've felt,what i've known
    never shined through in what i've shown.

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    PLEASE READ THE POSTING RULES & HOW TO CORRECT THREAD TITLES & THE SELLING RULES
     
     

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