e46 330ci exhaust manifolds x reg (2000)

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  1. e46 330ci exhaust manifolds x reg (2000) 
    #1
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    hi all, im looking at changing the exhaust manifolds on my bmw but i cant find any exact info. is it actually worth changing the stock ones, do you get much if any hp gains, are the stock ones restrictive? my one has the cats underneath the car and not on the manifolds. i have seen a few pics on the net and the face plate on the manifold steps out (not flush) with the head ports so was wondering if it would be worth just porting the exhaust manifold to match the head allowing for better flow.

    any advice would be appreciated as i dont want to spend out loads of cash for no gains!!
     
     

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    #2
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    Bump anyone...
     
     

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    It will cost you loads for this to be done
    You can try supersprint exhaust system

    You will get more from a remap for a lot less if done correctly

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    i have done it myself on evos and makes a huge difference as it lets the turbo spool up alot easier just never done it on a n/a. only costs £15 for the tungsten carbide router to actually do it, just not sue if id be wasting my time or not. i already have a remap on the cards tbh looks like im going to go for the e36 m3 manifold swap now and do a custom job pluss get rid of the cats while i am there plus got myself a valeo solid flywheel conversion kit save a bit of weight and get rid of the horrible dual mass!
     
     

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    Get the car dynoed 1st and after each mod so you can see if it was worth doing

    Here's a remap review on a 330i e46
    http://forum.evotechnik.net/showthre...i-petrol-remap

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