Catbacks and downpipes are distinctive animals altogether. The downpipe will be the piping that connects to the turbine. The catback, Alternatively, relates to every little thing after the last catalytic converter and goes every one of the way back again into the muffler. I have an auto but I do https://angelovbhm28528.gigswiki.com/4960674/maximizing_performance_the_ultimate_guide_to_downpipes_for_mercedes_benz_gle_63_amg