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    #11
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    It has nothing to do with exhaust gases escaping faster. Its solely to keep underbonnet temps down so that the inlet manifold doesnt get heat soaked as much so its mainly the induction side of things.
    From experience it works well. I wrapped a 6 branch manifold on a KR 16 Valve converted Mk1 golf that I did a while back and it significantly reduced engine temps in the bay. Ive never heard of it cracking manifolds which is usually down to engine movement i.e buggered engine mounts.
     
     

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    #12
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    If I was going to do it.. then I'd probably do it properly and get a Zircotec coating..



    on an N/A car though it's probably a waste of money..

    * 2016 BMW M135i LCI (F20): current
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    #13
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    Quote Originally Posted by pangster View Post
    on an N/A car though it's probably a waste of money..
    You said it

    I guess with it being a z3 there really isn't a great deal you can do reduce the weight of the car.
     
     

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    #14
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    Quote Originally Posted by JackHarding View Post
    You said it

    I guess with it being a z3 there really isn't a great deal you can do reduce the weight of the car.
    there's quite a bit!

    the seats weigh a TON!
    some people remove the rear bumper weights
    the bonnet weighs a bit and can be replaced with carbon or fibreglass
    fibreglass or carbon boot
    lightweight wheels
    etc, etc

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    #15
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    Quote Originally Posted by pangster View Post
    there's quite a bit!

    the seats weigh a TON!
    some people remove the rear bumper weights
    the bonnet weighs a bit and can be replaced with carbon or fibreglass
    fibreglass or carbon boot
    lightweight wheels
    etc, etc
    To the OP, do that^

     
     

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    #16
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    i agree with the post about the n/a engines as it does very little tbh but the turbo cafrs it seems to make a decent difference
    this is going by experience on two totaly different engines.
    fiesta rs turbo and a escort gti .

    i do however like them wrapped for some reason dont know why it just looks good in me eyes

    that zircotec coating gear look realy good
     
     

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    #17
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    there is a fair old bit of stuff on the net about it. yes it does keep engine bay cooler but this is a fair few sites talking about this making more power if only a few say 3bhp or so .
     
     

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    #18
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    Quote Originally Posted by dan123ben View Post
    there is a fair old bit of stuff on the net about it. yes it does keep engine bay cooler but this is a fair few sites talking about this making more power if only a few say 3bhp or so .
    More like 1bhp haha.
     
     

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    #19
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    maybe we dont know for sure tho do we its all just theory i have some time to waste next week am going to do underdrive pulleys and the wrap at the same time see what happends maybe get it back on the dyno buy me to fing out for sure ? pangster you say removing the bumper weights how is this done are thay on the back and front bumper ? i red just before on a site some one saying there 14lb each and there are 2 didnt really say much else
     
     

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    #20
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    Report back on how you get on, its nice to see people actually trying stuff out rather than poo pooing. dyno and see if it does make any difference.
    all the small bits add up in the end.

    if its easy wins you want have you got rid of the viscous fan and replaced with electric ?
    lightened flywheel and clutch ?
    100cell sports cat convertor - makes a difference (wrap down to the convertor)

    i removed the seats from my Z3 last weekend, 25 and 30kgs each. so with sports bucket seats you may save 30kgs, maybe more.
    Z3
     
     

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