Backbox

[xoldog400]

Anyone tried to run their ph1 with no backbox, for example 4-1 mani + cat + straight through centre section + no backbox.
will there be any issues regarding backpressure or anything else when there's no backbox or not?

 

[Russ_16v]

Yes - you need back pressure, plus it would be stupid loud - and sound s**t