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Many have found out the hard way that 10mm spacers typically will not seat properly with their 66
*Note: This product does not fit right-hand drive vehicles
and offer better performance and reliability in high boost
This is a proprietary ECU flash that allows significant power gains while maintaining factory levels of drivability
Porsche 991 Turbo S GIAC Performance ECU Software Upgrade Q5 Many have found out theThis software upgrade from GIAC is a complete remap of your factory DME. This means that there are no external modules (also known as piggyback ECU's), or OEM performance files. This is a proprietary ECU flash that allows significant power gains while maintaining factory levels of drivability. Power gains with this upgrade are: 33 wheel horsepower on pump gas 60 wheel torque on pump gas Estimated crankshaft power output of 597 horsepower and 614 lb.
