>>28579730
I've got one like this on my van - straight through absorption type with a chamber in the middle, except the barrel is like twice the size of this one, and it's the absolute GOAT.
Basically no loss to flow and it quietens the exhaust down HEAPS.

I want to get another one for my other car but I can't find one anywhere because it was from a stock VW Amarok exhaust I bought off Marketplace, so I think I might try to make one myself.