We did some testing on a 2020 STI here at our shop and wanted to share the results with you guys! This was a completely stock EJ25 STI and we did 3 stages of modifications from stock and kept track of the results to compare. All of these results are uncorrected numbers which are about 25% lower than you would expect to see on a Dynojet dyno or our “Shootout” numbers. For more information on comparing dyno numbers check out our dyno page.
Our starting point was completely stock. With no tuning, no modifications, and with 91 octane fuel.
This vehicle made 214.9 HP and 218 TQ on our Dyno at 15psi. The factory rates these cars at 305 HP and 290 TQ at the crank.
Below you find the information of our findings along with dynographs for comparison. If you have any questions about building your 2015+ WRX STI, give us a call (763) 316-5882.