Back pressure in exhaust system - what to do to prevent this?
I've been thinking recently about my exhaust system and how much back pressure it has. If i put my foot down and let off when the turbo spools, i get that back pressure sound when i let off like it's just throwing it out.
Basically my system is, 200 cell sport cat, centre box, then straight pipe going to my tailpipes, no backbox. I believe having no backbox is creating the back pressure. Am i right? I've been reading up on back pressure, and i don't know if it's a good or bad thing? But then i think big companies such as Milltek don't do that so mine must be done incorrectly? How can i resolve mine without having to fork out for a Milltek system? Can i simply add a normal small bacbox and it will be better?