i find with my bell-mouth dump pipe that when i'm fully into it and flat changing from 1 to 2nd and 2nd to 3rd i get a bit of a cough between gear changes (vf-22 at 17psi) and i'm sure this is caused by the turbulence from the wastgate gases, there may be a group buy happening on gtrydaz for these splitter gaskets but more designed for a bell mouth rather than a divorced dump as pictured above

i'll keep you guys posted when the man with the plan (PMD) gets it off the ground, he's done heaps of custom metal work and quality is never an issue

the gtrydaz gasket splitter will also have the splitter protruding into the bell-mouth aswell as into the exhaust housing on the turbo, which wshould be more helpful too