1997 e36 328i - Decat

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  1. 1997 e36 328i - Decat 
    #1
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    E36_turbo's Car Details
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    Helloo,
    I am deciding on decating my long discussed car , I have spoke to a guy who does it for £160 for both pipes and said he can creat it in a way that it can be easily removed and replaced with the standard cat for MOT if needed.

    Does the price sound reasonable? any idea of online shops or....?

    On the other hand what are the pros and cons that u would predict, for instance no O2 or lambda sensor in the cat could mean the car will show up a error code. so don't know where to place the lambdas?

    I am also not sure about the gain( i think maybe around 20 to 30 HP, sound to much ?) and would it improve mpg?

    cheers
     
     

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    Lambdas are before the cats in the manifold so wont be affected by removing the cats. You wont see a massive gain in HP. I had the cats removed on my 325, didnt feel much more of a gain just a better engine response....
     
     

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    So you get 2 pipes, pre-bent with the flanges on ?
    £160 sounds reasonable to me.

    And as Steve said, you shouldn't run into any problems engine wise, as the lambda's are in the manifold !
     
     

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    Quote Originally Posted by Ferret View Post
    So you get 2 pipes, pre-bent with the flanges on ?
    £160 sounds reasonable to me.

    And as Steve said, you shouldn't run into any problems engine wise, as the lambda's are in the manifold !
    yes that is correct with fiting, I think u get around 10% increase in hp and toruque, I will find out once i try it
     
     

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    Can buy a lambda sleeve to keep your sensor Reading good
    318is M3 Rep project with some extra power : M3 LTW's, M-tec boot badge, rear window spoiler, Black kidney grills, smoiked fogs and indicators

    Still to get: BBTB, Catback magnex, Decat, Apex RDX coilovers, M3 mirrors, H.I.D's, Remap
     
     

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    Quote Originally Posted by Cammy View Post
    Can buy a lambda sleeve to keep your sensor Reading good
    what is lambda sleeve?


    by the way would removing lamda all together cause an engine light ( i think it does) and cause the engine to run erraticly?

    I though the 328 i has 4 lamdas( 2 frontof the cat, 2 past the cat) am i wrong ? I am saying this because on of the comments mention that they are located in the manifold which means there should be 2 of them only for both pipes.
     
     

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    i paid 150 for my decat pipes which are flanged so i can fit them back.the exhaust specalist commented that he would of charged more if hed realised how much of a bugger to get the flanges right.top job tho ive had them in a couple of years and you will fail an mot with them in, i tried and failed
     
     

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    Quote Originally Posted by M3 TIM View Post
    i paid 150 for my decat pipes which are flanged so i can fit them back.the exhaust specalist commented that he would of charged more if hed realised how much of a bugger to get the flanges right.top job tho ive had them in a couple of years and you will fail an mot with them in, i tried and failed
    did u feel a lot of difference after changing it ?

    what did u do to ur lamda sensors and did ur fuel consumption also reduced.

    by the way i liked the idea of going for mot with the cat , did u not get reported ?
     
     

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    Quote Originally Posted by linux44 View Post
    did u feel a lot of difference after changing it ?

    what did u do to ur lamda sensors and did ur fuel consumption also reduced.

    by the way i liked the idea of going for mot with the cat , did u not get reported ?
    i felt bugger all differance only noise.i reckon the differances are that little that you mind might make stuff up haha,
    they only cut the cats out which dont have the lamdas in.
    my mot mans a cat lover booh.
     
     

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    you wont get any power gains from removing the cats
    on the 328i the lambda sensors are located in the exhaust manifolds (1 in each manifold) so if you decat the car you wont affect them
    loud-low-slow-project


    no sugar turkish, im sweet enough
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