Every Evo, RSX, and 350Z owner wants to believe that. Now, on some dynos that may actually be true but for the most part, on a Mustang or DynoJet, the facts are that the STi puts 250+ on average using 93+ octane. Don't forget that the STi requires 93 octane. While it will run on 91 it does so in a slightly reduced capacity. The important part is that dynos vary greatly. You could dyno a Z on a DynoJet and put down 245whp and dyno a STi on a Dyno Dynamics and get 225whp. You really can't compare the two.Originally Posted by fastwrx135
Furthermore, it seems everyone wants to put a BOV valve on their STi as soon as they get it. BOVs have been proven to cause a STi to run rich and hurt performance.
So while I agree that a STi won't rape a Z from a roll, for the most part any race starting under 90-100mph should go to the STi. The hard part of driving a STi well is nailing the 1-2 without bogging and shifting quickly between 4-5.