Raise tension rises due to improved velocity from the air because it approaches the turbine, growing energy. #two- They generate odor: Since the combusted gases exit the auto without having staying converted to considerably less hazardous forms, catless downpipes generate odor. Moreover, superior-flow downpipes carry other pros to turbocharged engines, https://lukasxdim28517.blogdomago.com/27499935/understanding-downpipes-catless-vs-catted-downpipes