jaw Posted December 27, 2007 Share Posted December 27, 2007 Right, just a question really - I notice most turbo supra's, subaru's, evo's etc generally sport a large aftermarket exhaust/backbox.. with regards to performance, is doing this actually beneficial? If a) you fit a larger bore exhaust system, or b) you fit a large backbox and pipe - will you see an increase in performance with either? Bought mine with an aftermarket cat-back system fitted, and got to thinking really. A turbo would benefit from not having much back pressure and free-er flowing exhaust fumes I would've thought as they turn the turbo? or am I way off. Just woundering really as it's something I notice all the time but wounder if people do it for performance or just appearance/sound.. cheers:) Quote Link to comment Share on other sites More sharing options...
Daston Posted December 27, 2007 Share Posted December 27, 2007 less back pressure means more boost (as the gasses are flowing faster). This is why the most tuned turbo cars have large bore exhausts. Quote Link to comment Share on other sites More sharing options...
hogmaw Posted December 27, 2007 Share Posted December 27, 2007 n/a drivers do it for the sound, but to get free-flowing exhaust which will power the turbos the bigger the pipe the better Quote Link to comment Share on other sites More sharing options...
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