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  1. #1
    Saab Fan
    Join Date
    22 Feb 2017
    Location
    Asia
    Posts
    12
    Saab(s)
    2008 9-3 B207E

    Does a cat-back exhaust affects the torque at low rpms

    Hi guys, I would like to install a cat-back exhaust and I was wondering if it would affect the torque.

  2. #2
    Saab Fan
    Join Date
    05 Oct 2017
    Location
    Belgiƫ
    Posts
    8
    Saab(s)
    Saab 9-3 2006 2.8 Turbo V6 Hirsch
    I got a high flow 2.5 inch cat back from Simons exhausts on my 2006 9-3 aero v6. High flow means that your gas gets blown faster out of the engine. This creates a faster spooling up of the turbo. Less turbo lag. This is all beneficial to create torque. To big of a pipe and you lose power. Even an 4 stroke engine relies on some back pressure to suck the gasses out of the engine.


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  3. #3
    Saab Fan
    Join Date
    22 Feb 2017
    Location
    Asia
    Posts
    12
    Saab(s)
    2008 9-3 B207E
    I plan on getting a hirsch y pipe dual silencer exhaust. Not sure on the specs of that.

 

 

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