[135i2]

On my standard unopened engine, its not worth looking at cams or any other major hardware changes over optimising the current set-up in order to get a peek at this ST kits potential. Results on a standard engine has always been the initial goal ahead of future development. My TB, FF intake and IC are well capable of high HP. No restrictions there.

We are already way past the safe limit for a standard n54 with breakage, bent rods or ring land failure only a matter of time. At over 80,000kms my car could suffer failure at any moment along with a whole lot more.

Relative safety (if there is such a thing) at high power levels needs a built motor, head, cams, Syvecs etc. Most of that is planned for and will come in time. Only then will the upper limit of this turbo be found. But it won't happen on this motor with a standard auto.