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  1. Le Baguette

    Exhaust differences between 172 and non Sport

    What exactly other than bore size differs the 172 catback from a 1.4 or 1.6 catback? Reason I'm asking is a company is offering exhaust systems in stainless steel for 1.4 and 1.6 but no Sports. I asked them if they could make an exhaust with a slightly bigger bore for my 172, but unfortunately...