Joe, I didn't like the way it mounted. You are supposed to put it in the intake tubing (there is a groove a little ways back) then reinstall intake on turbo housing. It would get cockeyed. So, Rip welded a couple of small beads on that portion which fits into the turbo and I installed it in the turbo first, then put the intake back on. That worked some better. What I didn't want was for it to get out of alignment thus causing a restriction. Performance? No scientific measurements. Perhaps turbo a little quieter but smoke about the same. Boost bout the same, maybe 1/2psi lower. I think the idea might work but there is a thread going on DTR right now bout dyno results. What was more important to me, and BTW, Piers saw it, was it looked as tho it could actually restrict the volume of air to the turbo. Well, the DTR thread bears this out. Now I realize that it wasn't real world driving, but.........flow testing it caused a 43cfm reduction in flow. Now take a DodgeZilla like I am now running. It flows (corrected) bout 540cfm. If you subtracted 43cfm off of that, it would be almost a 10% reduction in flow. Doesn't make sense to me. I need all of the flow I can get and don't care if turbulent or straight.
HTH
Regards,
Roger
D
Z