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R1 Performance Package | R230 | SL 550 | 413 HP / 422 TQ | 5.5L NA V8 | M273

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 Upgrade Stainless Steel Shorty Headers   SL 550 (R230) Stock Performance: 382 HP /…

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$5,290.00
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+31

Horsepower

+31

Torque

Description

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 Upgrade
  • Stainless Steel Shorty Headers

 

SL 550 (R230) Stock Performance:

  • 382 HP / 391 LB-FT

 

Modified Performance:

  • 413 HP / 422 LB-FT

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