[bobsiopener]

Hi JJ,
Are you starting with a stock motor or are you building one with 10:1 pistons. If so why not just start with a low compression engine. Have you looked at what size turbos are being used in performance engines of half this size (half because you are using twin turbos). I recently bought 2 bosche bypass valves for my Maserati Biturbo and I would recommend these as they will flow alot of air. Its better to use bypass valves vs blow off valves because they have better performance in terms of keeping the turbos spooled and they are often handled better by Fuel injection systems.
Do you think that you can use the Gotech to handle the boost? have it actuate a solenoid at a certain PSI. The downsides of manual and cheap electronic boost controllers is that there is slight opening of the waste gates at boost below the threshold. The other problem is boost creep, meaning that it doesn't hold constant PSI after the waste gate has been opened.
Bob