Porsche 991 Turbo GIAC Performance ECU Software Upgrade F80 M3 I've had mine on a

I've had mine on a few weeks on my b9 s4 with sport suspension and I really like them

the bushing is able to better hold and maintain lubricating grease

you are missing out on as much as 25 wheel horsepower

Ready for an oil change

the goal with this offering was to lower the M3 by a tasteful amount while keeping ride quality the same or better than stock

Porsche 991 Turbo GIAC Performance ECU Software Upgrade F80 M3 I've had mine on aThis 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: 53 wheel horsepower and 46 wheel torque on 91 octane 102 wheel horsepower and 64 wheel torque on 100 octane Estimated