Wrapped up this manual-trans M4 a short while ago with a fresh Pure Stage 2 Turbo + Bootmod3 upgrade, just reaching the 600whp club on 91 + meth. All performed in just under a couple of days, definitely a sleeper.
Modifications
Pure Stage 2 Turbo Upgrade (High Flow)
Bootmod3 Stage 2 Software
Evolution Racewerks Downpipes
Snow Performance Stage 2 Progressive Methanol System
K&N Filters