C-5 Corvette

In January 2007 Joe Shirley contacted us here at the Horsepower House about his very clean, stock 1997 Corvette. This Corvette is a Tennessee car and has to pass emissions testing. The 1997 catalytic converters were aging and causing the car to fail so he came to Bowling Green looking for advice.

Joe considered many options and after weighing the pros and cons of each setup he decided on the following setup.

We installed a set of Dynatech Supermaxxx Stainless Steel Headers, Dynatech Stainless Steel X-pipe, and a set of Dynatech Stainless Steel High Flow Catalytic Converters. Out back Joe decided to go with a Corsa Indy Pace Car system because of Corsa's great ability to be quiet at cruise speeds, but aggressive at wide open throttle. While we were installing the exhaust we decided it would be a good time to replace the 02's so we went with a set of NTK 02 sensors. Up top we installed a new Halltech Stinger air intakee and an LS6 intake manifold. After all the hardware was installed it was time to handle the software with a custom tune on our Dynojet by Jessie.

We made a baseline pull (Pull 002) when the car was first brought in and it made 278hp and 296 ft/lb tq. After the hardware install and Jessie's custom tune we made a final pull (Pull 016) the car made 311hp and 326 ft/lb tq through the catalytic converters.