Mercedes S-Class W221 Electronics
FABSPEED
FABSPEED
XperTune Performance Software (Modification Service)
Performance ECU software upgrade improves horsepower, torque, and driving characteristics of the M278 4.7L V8 BiTurbo Engine by reprogramming various sensor inputs, air/fuel ratios, and boost pressure. *Requires sending in your factory ECU.
INCLUDES: ECU tune (modification service)
VEHICLE: Mercedes S500 / S550 W221 M278 2011-2013
PART#: FS.MER.M278.ECU
DETAILS/PHOTOS: www.fabspeed.com/..
Text Message +1.860.809.0907 for VIP Pricing 24/7
XperTune Performance Software (Modification Service)
Performance ECU software upgrade improves horsepower, torque, and driving characteristics of the M278 4.7L V8 BiTurbo Engine by reprogramming various sensor inputs, air/fuel ratios, and boost pressure. *Requires sending in your factory ECU.
INCLUDES: ECU tune (modification service)
VEHICLE: Mercedes S500 / S550 W221 M278 2011-2013
PART#: FS.MER.M278.ECU
DETAILS/PHOTOS: www.fabspeed.com/..
Text Message +1.860.809.0907 for VIP Pricing 24/7
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