G8 GT / G8 GXP Dyno Tuning

Excelsior Motorsports provides dyno tuning for both LSX G8 engines: LS2 & LS3. We support aftermarket computer systems including EFI Live, Accel EFI and Big Stuff 3. If needed, we can also perform speed density tuning especially in forced induction applications.

gxp performance parts dyno tuning
G8 GXP 2009

The LS3 engine found in the G8 GXP represent the forefront in LS engine technology from GM. These engines respond very strongly to the additional airflow that our engine modifications provide.

g8 gt performance parts dyno tuning
G8 GT 2008-2009

The L76 in the G8 GT offers LS2 power with active fuel management for both gas mileage and proven reliability in numerous performance applications. These engines are setup very tame from the factory and produce a great deal of power with performance parts.

g8 gxp dyno tuning
No Inflated Numbers, Just The Most Accurate Tuning Results

Our objective in the dyno cell is to give the customer the most accurate and repeatable diagnostic and tuning evaluation possible. We spent many months of research looking for the best dynamometer hardware and software being produced. We found the latest software and equipment being made in Australia by Mainline Automotive using the latest Windows based software; DynoLog. Our dyno cell has 60,000 CFM of air flow capacity for proper cooling and fume evacuation for repeatable testing. With both systems in place we are able to get true and accurate data to the customer to establish baseline data. Any changes after that can be recorded and compared to the baseline. Besides our EFI Live Software we can use any after market computer software to tune your car.

Due to our unique software, proven parts combinations and years of experience; our dyno tuning has become quite popular. Please book your dyno tuning session or parts installation in advance.

g8 gxp dyno tuning

Not All Dynos
Are Created Equal

Mainline Dynamometers Offer The Most Accurate, Repeatable Tuning Results In The Industry!
Mainline Dynos are unsurpassed in their accuracy and represent a major step forward in dynamometer technology. Featuring advancements not offered by any other dyno manufacturer like advanced load control, industry leading data acquisition and innovative data analysis which combine to offer superior tuning for driveability and unbeatable wide open throttle tuning.
Why Our Dyno Is Better