I have no experience from the actual fabrication of it.
need insight from fabricators.

Is my design right?

i placed a 3mm thick(red) plate between the ports to separate the exhaust gases., i know for fact that these should not merge in a twinscroll design

attached are the pictures.

 

why not just cut the two pipes on one side each and do it the tradition method?

 

Make two 2-1 collectors and then weld them onto the flange at an angle.

This is the collector I made for my manifold.

 

Thankyou so much aluthman! how many lbs of boost are you running?

i found this on youtube

 

Right now I'm still on the base tune at about 23psi. Eventually I'll end up in the high 20s or low 30s depending on how the turbo responds. EFRs don't like being overspun, so I have to be careful.