This one was a real surprise! I've only seen a couple stock turbo STI's come close to 300whp on 91 Octane, but this one set the new record, hitting a whopping 306whp and almost 340ft-lbs. The amazing part is that it did this at only 18.5psi peak boost.
This car is just a combination of a nice all around setup and a bit of a freak of a stock motor. It has a TBE, Tomei EL Header, Grimmspeed EWG UP, Cobb Intake, DW65c Fuel Pump, and Grimmspeed 3-port EBCS. Along with an EQT custom tune using a Cobb AP V3. The car is in dire need of larger injectors as its completely out of fuel up top, so it actually has even more potential. Here is the dyno chart:
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