i like to build my own pies but i have a new rs2000 scorpion c/section
and uni fit back box should i take mid box out or just leave in due to backpressure people say not good for turbo but thought b bit loud stright through

 

i build all my pipes you should look at 2.5 inch min
shraight through box's are the best,i have one back box on
my rover it's not that loud