
Why would you want to specifically add backpressure to an exhaust?
For my engine, high compression racing V2 motorcycle, with short large diameter pipes, why would you want an addition of backpressure in the form of a collector chamber in the bottom.
All of the expensive brand name seem to add a chamber of sorts while cheaper options seem to just be straight pipes.
Even the most expensive option featuring a true 2/ 1 /2 feature the chamber between the two lengths.
Other than than sound, when chasing peak hp, why Add it?