R1 Performance Package for CLS 550 (C219- 422 HP / 421 LB-FT) bmw-7-series--e66---2001-2008--esr3332914 Up to 540HP and 705

Up to 540HP and 705 LB-FT

the Deep Monolite Series also offers optional titanium lug bolts for enthusiasts seeking the ultimate finishing touch

up to + 10 LB-FT

Our ECU tune offers the biggest performance gains on the market with our dyno results increasing performance from 362 HP and 390 lb/ft torque

The R3+ upgrade features RENNtech’s Stage II turbochargers with lightweight forged billet turbo wheels with a larger impellers (inlet side) and an increase in the turbine trim (exhaust side)

R1 Performance Package for CLS 550 (C219- 422 HP / 421 LB-FT) bmw-7-series--e66---2001-2008--esr3332914 Up to 540HP and 705R1 Performance Package for 219 CLS 550. Includes ECU Upgrade and Stainless Steel Header. Up to 420HP and 421 LB FT. The R1 performance package for the Mercedes 550 includes our proprietary ECU upgrade in addition to our stainless steel shorty headers designed specifically for the 550 V8 for a combination that provides increased performance, sound and throttle response across the vehicles entire powerband. R1 performance package includes: RENNtech ECU