I think someone posted with the TB and EM they should be at close to 400 at crank on a Sti, but I suspect that's a bit optimistic the vf 39 will only support 370 at best. As far as srt-4's depends how the race went down but they are pretty quick. I have raced 2 and the first time on a 50 roll I left him about 5-8 cars back. The 2nd time with a friend and I really did not put my heart into it but we were dead even from a 20 punch but I just left it in 2nd since we were already rolling and just hit it. He on the other hand was reving the engine before engaging the clutch so was already on boost. If I had reved and engaged or gotten it in 1st it would have been another story. So far my results stock 245awhp with 258 awtrq, dp with tuning 280 plus awhp and 293awtrq. I have yet to dyno again but no cats with walbro and aps cai.....but now it should be hovering in the low 300's and better than that in torque.