PRE recently did a test that pitted lots of Subaru stock location turbos against one another. This is what the plot of our smaller Steam STX 67 looked like against a Forced Performance HTA 71. The STX 67 basically made power sooner, had better low down power, and made 10-25 whp across the entire rev band.
Here are some unboxing pictures of our new Steam STX 67 turbo for FA20 (eg. 2015 WRX). This is our design validation (DV) prototype turbo. It doesn’t have as perfect machining as the final retail version will, but I think it does give you a much clear picture of what will be included in the box.
This is a design validation (DV) prototype, so it does represent a final retail product. For example the housings aren’t fully machined in these pictures, and they are just showing OEM accessories to illustrate that this turbo is a direct replacement for the OEM turbo. The retail version will have custom fittings. The final turbo will just reuse the stock turbo oil pan.