3 inch downpipe to 2.5 inch system

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05 November 2013, 08:28 PM

t16coupe

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3 inch downpipe to 2.5 inch system

hi just brought a impreza its got a 3 inch decated downpipe leading to a 2.5 inch middle and back box what is is ok till power wise is it worth getting a 3 inch middle and back box cars running 306bhp on a td05 16g

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05 November 2013, 08:35 PM

MattyB1983

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You don't need a 3" system chap, theres cars on here at well over 400 ponies with 2.5" systems.

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05 November 2013, 08:53 PM

legacy_gtb

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440/440 here on a 2.5''

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05 November 2013, 09:41 PM

imprezaworks

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Car mapped with a 3" system ok to change to a 2.5?

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