World's First rear mount turbo M275 V12 - 2003 Mercedes Benz CL600

Updated: 12 Mar 2018

850+ hours of work, several broken knuckles, and one crazy idea.

UPDATE completed a 5,700 mile trip across America and back in 11 days
https://www.youtube.com/watch?v=-99JuvriTnc

Projects and Modifications - in data logging / early tuning stages

More build photos on my IG : ConeKillerAUTOx (and no - I don’t auto cross this car haha)

Suspension / Braking / Wheels
• Removed ABC system
• Removed ABC control unit
• Removed stock ABC/Power steering pump
• ABC System Deletion
• ABC Pump Deletion
• Power steering pump conversion to w220 non ABC
• Coilover Suspension Conversion (Eibach)
• 18” Lightweight MB 5 spoke rims
• 18” TOYO R888 Tires (275 rear / 255 front)
• EuroParts/Mercedes lower and upper control arms
• Brembo upgraded rotors throughout
• Brembo 4/6 pot calipers

Ignition / Electronics / Computer Management
• Mercedes Benz Coil Packs
• ECS Mercedes Benz Ignition Control Module
• 24set of step 7 cold NGK Plugs
• Mercedes Benz gas pedal with new pedal sensor
• ABS sensors throughout
• ECS Transmission conductor plate (3x)
• ECS Transmission wiring harness
• Eurocharged Transmission Control Module
• Eurocharged ECU Tuning
• Glowshift gauges (wideband A/F, boost, oil temp, 2x oil pressure, nitrous pressure, fuel pressure)
• GReddy Spec ii electronic boost controller
• Remote mount Whistler 360 radar detector
• Rewired all stock sensors (MAP, temp, pressure, etc)

Engine / Cooling / Turbo / Transmission
• Removed stock turbos
• Removed stock exhaust / stock turbo manifolds
• Cut and capped existing oil feed / return lines
• Looped stock turbo water feed/return lines
• Removed washer fluid Reservoir
• Removed heating lines to washer fluid
• Removed stock steering wheel
• Removed stock heat exchanger
• Separate coolant reservoir/system for intercoolers
• 2x Electronic fans for heat exchanger
• 2x Bosch water pumps for intercooler circulation
• Custom Water-to-Air Intercooler
• Water ICE tank
• Water lines to and from backseat/engine bay
• Mercedes 2000-2002 non turbo exhaust manifolds
• Nitrous Express 10Lb - 125 shot (wet-shot) system
• Nitrous Express Purge system
• Massive front mount heat exchanger
• Borg Warner rear mount S400 series turbo
o Compressor Wheel: 74.5mm / 101.45mm - 95lbs/min
o Turbine Wheel: 78mm x 87mm
o Compressor Inlet: 5”
o Compressor Outlet: 4”
o Turbine inlet: 0.90 Divided T4
o Turbine Outlet: 4”
• 2x TurboWerx Oil pumps (1 scavenge / 1 feed)
• 5 QT remote standalone oil reservoir for turbo only
• Oil feed/return lines + Front mount oil cooler
• Mobile1 Full Synthetic 0W-40 throughout
• Replaced all stock vacuum lines
• TiAL Sport 50mm MV-R Wastegate
• TiAL Sport 50mm Blow Off Valves X2
• GReddy Electronic Boost Control Valve Spec ii
• SLR Mercedes McLaren 722.6 Solenoid/spring upgrade kit (used a few parts from it)

Comments

Is that low rear intake safe?

I plan on running a dry flow mesh cover to repel water. Looking to get it on there soon! Was contemplating a higher mounted intake and some vents to let hot air escape from trunk also

Regular CL’s are the ultimate cars for me. This thing is the ultimate ultimate car

Thank you!!! haha me too

Holy f**k, that’s something

Thank you! it made it from Pennsylvania to California via Rt66 and back to Pa via the Nevada, Utah, Coloado and midwest with only 400 tested miles. No major issues on the trip! 5,700 miles in 11 days. 119*F temps in desert and 11,000’ elevations in the Rocky Mountains. It was an awesome experience and I am glad my build held up!