now just imagine if they used a properly sized turbo that was at a high efficiency range for the cfm rating the engine is making.

I'm sure it did make good numbers, but for a stock internalled b16, it's a horrible choice. One look at the compressor maps should make that painfully clear. That turbo's efficiency range is good at over 2 bar... it's meant to make a lot of boost. By bottle necking it with a low boost, stock internalled set up, you're going to end up making iat's go up, etc.

It's a bad choice.