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During our dyno test we learned that there was not enough oxygen flowing into and through the motor to efficiently reduce NOx emissions. Although total hydrocarbon emissions were significantly reduced with the addition of cats, they need air to burn off NOx. Our solution for the on track test was this stock Camaro air pump. It was installed to pump air into the two exhaust pipes before the cats so that there would be enough oxygen to burn the unspent NOx. There was a check valve for each bank to ensure that there was no backflow going on. The team was concerned that, under high rpm, the pump wouldn't be able to produce enough pressure to be effective since on a production car, it's only designed to work at low rpm. The data currently being analyzed will tell the true story.