Tuning the Sharkwerks 2010 3.8L GT3

I was visiting my good friend Alex Ross and crew from Sharkwerks, so we decided it was a good time to dyno test and tune their 2010 GT3 project car.

We drove the car to Stasis Engineering (an Audi Tuner, located at Infineon Raceway) and reserved the dyno for the whole day. I'll tell you now, there's nothing quite like sitting in a room for 8 hours while a GT3 motor is taken to 8500 RPMs.

We made around 60 pulls throughout the day with various configurations, and made adjustments to the GT3 ECU software throughout the day. We also used this time to dyno the SharkWerks 997 GT3 Track Exhaust system and tuned software specifically for the low restriction exhaust.

The tuning involves more aggressive fuel calibrations, timing advance optimization for specific grades of fuel, and a more responsive accelerator e-gas settings.

A summary:

With software only, the 2010 GT3 went from 392 RWHP to 404 RWHP at the peak. The car gained about this much horsepower for most of its RPM range. The car gained over 10 ft-lb of torque at its peak around 6600 RPM and more torque throughout the RPM range. With the exhaust and software, the gains were higher, bringing it up to 414 RWHP at the peak (22 RWHP net gain), more torque at the peak, and a large gain in torque between 3700 and 5400 RPMs.

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