https://f30.bimmerpost.com/forums/sh....php?t=1653845
Turner Stage 2 - intake, Intercooler, and exhaust.
358whp STD
https://f30.bimmerpost.com/forums/sh....php?t=1681206
Turner stage 3 with high flow catalyst
372whp STD
Just one thing to note - not huge numbers, but look how the well the power band holds from 5500rpm to 6500rpm. This matters more to me than absolute big numbers and huge amounts of (useless) torque.