Weistec has released a bolt on turbo upgrade for the M5 S63 starting at $11,999.99 and it looks real good, premium quality. The turbo options are:
GTX3071R Gen II
GTX3076R Gen II (+$1000)
GTX3576R Gen II (+$2000)
GTX3582R Gen II (+$2300)
You'll get charge and downpipes to make it entirely a bolt-on affair, no core charges. There is a WMI option for another $1000 for the complete system, and an anti-surge valve for $600.
http://weistec.com/all/bmw/5-series/m5/2014-2017-f10-s63tu/turbochargers/s63-w-4-turbo-system.html
GTX3071R Gen II
GTX3076R Gen II (+$1000)
GTX3576R Gen II (+$2000)
GTX3582R Gen II (+$2300)
You'll get charge and downpipes to make it entirely a bolt-on affair, no core charges. There is a WMI option for another $1000 for the complete system, and an anti-surge valve for $600.
Key Features:
- Choice of Garrett Gen 2 GTX3071R, GTX3076R, GTX3576R, or GTX3582R Turbos
- .75 A/R Turbine Housing
- .70 A/R Compressor Cover
- No core charge / exchange
- Ball Bearing Turbochargers
- High flowing Weistec Stainless Steel turbine housings
- Weistec Turbo Intake Tubes and Charge Pipes
- Weistec 304SS Downpipes (OEM style downpipes are incompatible)
- All OEM heat shields are retained
- 1000HP to 1700HP (Engine Power) Capable depending on turbo selection and with supporting modifications
- Retains factory wastegate actuators
- Bolt in Installation
- Stainless Braided Oil and Coolant Lines
- CNC Machined Anodized Coolant and Oil Fittings
- Custom Tuning Required
http://weistec.com/all/bmw/5-series/m5/2014-2017-f10-s63tu/turbochargers/s63-w-4-turbo-system.html