calibrations for:
calibrations for:
  • bmw ®

GIAC performance software for the bmw Z4 ® 35i E89 ( 2010 - Present )

3.0 Turbo N54


GIAC Stage 1 Plus 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".
an inter-cooler improvements will help to achieve optimum performance gains.
OEM Horsepower
and Torque
320 HP  330 Ft-Lbs
GIAC Pump Mode*
360 HP  360 Ft-Lbs
GIAC Race Mode**
390 HP  390 Ft-Lbs

HP and Torque figures are average engine estimates derived from wheel power and acceleration testing.
* Premium Fuel is required.
** 104 RON fuel compatible. 109 RON equivalent fuel for optimum results.
Dyno Plots
bmw Z4 ® 35i E89 ( 2010 - Present ) - GIAC Stage_1_Plus dynoplot
Supported ECUs

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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.