Wouldn't be as accurate as running 2 of those solenoids? Aren't they both basically injectors that are controlled off the same single output wire and there for operate at the same time?
I personally feel that 2 iat sensors right befire the TB's would of benefited the turbo accuracy and effeciency more than two boost solenoids especially since your using open loop boost correction and only taking that iat reading on one side of the engine. Since we are basically running 2 turbocharged 3 cylinder engines It seems more logical to me to average out variances from both sides of the engine and use one source to equally control both sides to ensure whats happening to one turbo is happening to the other turbo without having to watch 2 boost gauges.