well here is the first impression of the S15 dual bb turbo, The turbo sounds freakin awesome, the spool on this thing is amazing, the car just wants to go. Im only running wastegate pressure right now also and i will tell you what at 11psi of boost this thing hauls, im not pushing it too hard because i only have my fuel pressure set to 3 bar when the program is for 4 bar, i need a fuel pressure guage before i can put the afpr back on. But i tell you man, the power this thing is making at only 11psi is crazy. The when punched in 1st or 2nd will just bounce the rev limiter like crazy all while still pulling fairly well, i hit third and the speedo just jumps to 80mph falls back slightly then goes to 90mph all why still squeeling the tires along the way. I would say right now at 11 psi its quite a bit faster than the t25 was at 18psi spike and holding 12-13psi, this turbo does not drop off power at all. it pulls soo consistant to redline, if i punch it in 3rd again it just breaks the tires slightly and will squeel them till about 85 all while pulling maliciously all the way to 90 without hesitation. i think with the little more added fuel to bring the a/f where its supposed to be it would probably pick up some power even at this same boost level. i wont up it past this boost until i get the 520cc injectors in. Its already gonna make more power than what the 370's can handle especially since it holds power all the way to redline.
The torque is crazy also, the car literally just wants to go every time im partial throttle. I will get some pics later of the car, i cleaned it all up and my evo hood vent is on the way and should be here this week. I will keep this thread updated. Cant wait to get fuel all setup the way i want it and see what this thing does at 20psi on some 100 octane race gas.