This is an amazing project on so many levels! Thank you for sharing your build. The waste solvent system would be groundbreaking on its own but coupled with the compound turbo system, you have found the Holy Grail. You achieved better fuel efficiency combined with massive power increases. Incredible.
Let me see if I have this right. Exhaust gas drives the big turbo which empties into a downpipe which flows to the small turbo to spin it. However, the intake air travels back to the small turbo first though its own small intercooler and into the big turbo and through a FMIC (Front Mounted Intercooler) and into the intake manifold for the engine. I suppose the small turbo has a waste gate to keep from being overspun at high boost?
I love my TDI for the power when I want it and the efficiency the rest of the time but you have seriously raised the bar.
