For the Recirculate on an Evo:
I am living in Germany, so i have to have an closed Exhaust system.
I am running an BR GT35R with the Cast header, so i modified the Dump tupe.
I am feeding the dump back into the exhaust after the Oil Pan, round about 28 inches after the Turbine wheel. No probs to make it that way, using the BR provided Dump tube. Slip on design for the Dump, so no probs with installing the Downpipe ( Its an Invidia 3" SS )
I believe that i done it in a way David would do it.
Pro is that the Dump goes into the Exhaust in a very flat angle, not giving any backpressure back to the Turbo.
I am running from 24 psi Boost up to 41 psi, no probs with Boost creep or loosing power ( against open dump )
here are a few pics:
Dump_1.JPG
Dump_1 (4).JPG
Dump_1 (3).JPG
Dump_1 (2).JPG
For Mild Steel Flanges: if you use Mild Steel, let them go through the first plating processes for Chrome ( Copper and nickel plating ). That looks better, has no bad effects, but stops rust and its cheap.
Steffen
Evolution VII EU spec
BR GT35R @35Psi on Pump 94, AEM EMS w WB O2, AEM Short ram, Invidia G200 Turboback,
Buschur Race FMIC, 3" Piping, AMS VSR w.75mm TB, Race Cat 100cpi, Bilstein B16PSS9 Suspension w H&R Stabilizer-Bars, Team Dynamics 8x18 Prorace 1.2