Catbacks and downpipes are various animals entirely. The downpipe will be the piping that connects to the turbine. The catback, However, relates to every thing after the previous catalytic converter and goes all of the way again into the muffler. Significant-general performance downpipes for Normally aspirated engines are generally manufactured https://angelovbhm28528.gigswiki.com/4960674/maximizing_performance_the_ultimate_guide_to_downpipes_for_mercedes_benz_gle_63_amg