The guys then did their Stage 4 magic consisting of:
• MHR Axle back exhaust (I opted for the one with valves)
• MHR Downpipes with cats
• MHR Carbon air boxes by Gruppe M
• MHR Power boxes
• MHR Remap
We then put the car on the dyno again with the following result:
TUNED OUTPUT 659.95 WHP and 888.80 Nm of RW Torque.