ScoobyNet.com - Subaru Enthusiast Forum - 3 inch downpipe to 2.5 inch system

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t16coupe

05 November 2013 08:28 PM

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

MattyB1983

05 November 2013 08:35 PM

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

legacy_gtb

05 November 2013 08:53 PM

440/440 here on a 2.5''

imprezaworks

05 November 2013 09:41 PM

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

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