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Thread: cat back sound

  
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    cat back sound

    hey guys, does anyone know how loud a cat back system would be on a 1.8 sri astra with an irmscher backbox?

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    Den3232's Avatar
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    not loud, i've got a astra 2.2 sri with a sportex straight through pipe and a irmscher back box and theres only a little difference, but when i take the pre cat out it should sound better, it still sound nice

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    centre section and cat removed you will get noise only when accelerating, and not too loud, just middle section and its nice and subtle

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    thats good thats what i want, i was told the cat on the 1.8 sri is in the manifold is this true? i would like to decat my car to but not if i have to change the manifold too, be too much hassle if i have to get it back on every year for an MOT

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    police can do emissions tests on the side of the road.

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    Quote Originally Posted by odd View Post
    thats good thats what i want, i was told the cat on the 1.8 sri is in the manifold is this true? i would like to decat my car to but not if i have to change the manifold too, be too much hassle if i have to get it back on every year for an MOT
    Not sure if this is possible but you can always get a normal manifold and get a sports cat for the underneath part of the car
    >>Diary<< Status: ...........Slow and Steady.... may update more often...
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