Adding bolt-on horsepower to the 997 turbo is a continuous quest by many enthusiasts looking for more power. reverting back to old tuning technologies, agency power has developed a larger throttle body and plenum kit for the Porsche 997 turbo to gain added performance. the point of a larger throttle body is to get in more air. The more air you bring in, the more power you make. The 997 turbo's engine intake system works off pulses, so how that air is diverted to either side of the engine is not as important as the volume incoming.
The plenum kit includes an OEM Porsche Cayenne turbo throttle body (part# 94860511503) which is a direct bolt on and plug in for the electronic throttle control with no modifica...(choose a part on the right to read more)