Catbacks and downpipes are unique animals completely. The downpipe is definitely the piping that connects on the turbine. The catback, Alternatively, relates to anything after the final catalytic converter and goes all of the way back again for the muffler. Chris – My issue with eradicating the downpipe would be https://angelovbhm28528.gigswiki.com/4960674/maximizing_performance_the_ultimate_guide_to_downpipes_for_mercedes_benz_gle_63_amg