calibrations for:
calibrations for:
  • bentley ®

GIAC performance software for the bentley GT Speed ® 1st Gen ( 2007 - 2011 )

6.0 Turbo


GIAC Xplus adds horsepower, torque and more throttle response throughout the power band. This calibration is compatible with vehicles that have no other upgrades to basic "bolt-ons".
OEM Horsepower
and Torque
610 HP  553 Ft-Lbs
GIAC Pump Mode*
660 HP  600 Ft-Lbs
GIAC Race Mode**
710 HP  650 Ft-Lbs

HP and Torque figures are average engine estimates derived from wheel power and acceleration testing.
* 91 (r+m)/2 or 95 RON fuel compatible. 93 (r+m)/2 or 98 RON equivalent fuel for optimum results.
** 104 RON fuel compatible. 109 RON equivalent fuel for optimum results.
Dyno Plots
bentley GT Speed ® 1st Gen ( 2007 - 2011 ) - GIAC Xplus dynoplot
Supported ECUs

Other products

Hand Held Flashloader Switcher

GIAC's Flashloader Handheld Switcher allows users to switch between GIAC-tuned software programs with the touch of a button. The product is a pocket-sized,hand-held device that plugs directly into the OBD port. It uses serial flashing technology and requires no additional hardware within the DME.

Switching is performed by selecting the desired mode with the touch buttons. Cycling the ignition will save the new mode to the ECU's memory and retain its state until switched again.

More info.