R1 Performance Package for CLS 550 (C219- 422 HP / 421 LB-FT) bmw-7-series--e66---2001-2008--esr3332914 Gains: +15HP & +20TQ

Gains: +15HP & +20TQ

this forged design features much tighter tolerances than spun multi-piece wheels

CLASS S LONG (W 221) 500 Blue Efficiency 4-matic [2 Filters Required] (HP: 435 | Year: 11 > )

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 Gains: +15HP & +20TQR1 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