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jason stanley says: I am very pleased with the Agency Power short shifter, it performs great and was pretty easy to install. I installed it in my driveway with a few common hand tools. ..
5 of 5 Stars!

Robert Bluestein says: Amazing experience! Dado helped me decide which exhaust to get and I received it in the days. Had it installed and I can't get the smile off my face! Will buy all my upgrades from them! Recommend high ..
5 of 5 Stars!

Ahmad says: I wanna ask? This price 232 for one wheel or for 4 wheels??! ..
3 of 5 Stars!

David Su says: Hello Josh, Thanks so much for everything. Really appreciate your customer service and help. Best, Davi-d Su ..
5 of 5 Stars!

Austin Wood says: I switched from a stock air filter to a Perrin panel pilter and notiched better throttle response and the sound of the car seemed throatier. This is a great buy because it dosn't void the warrenty and ..
5 of 5 Stars!


Agency Power Performance Plenum and Throttle Body Porsche 997 Turbo 07-09
  • Agency Power Performance Plenum and Throttle Body Porsche 997 Turbo 07-09
  • Agency Power Performance Plenum and Throttle Body Porsche 997 Turbo 07-09
  • Agency Power Performance Plenum and Throttle Body Porsche 997 Turbo 07-09
  • Agency Power Performance Plenum and Throttle Body Porsche 997 Turbo 07-09
  • Agency Power Performance Plenum and Throttle Body Porsche 997 Turbo 07-09
  • Agency Power Performance Plenum and Throttle Body Porsche 997 Turbo 07-09
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  Product Information
 Price: $850.00 
  Model: AP-997TT-105
  Reviews: (1)  
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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 modifications needed.  This throttle body has a 77.64mm inner diameter compared to the stock one of 75.64mm.  We chose to go with this smaller diameter throttle body to give the car more low end horsepower and torque.  If the diameter of the throttle body is to big, it will increase turbo lag and performance gains will only be made at the mid to top end RPM range.  Since most 997 Turbo users drive their car on the street and track, we developed this product to substantially increase throttle response and improve "usable" power.

The Agency Power plenum kit is made using high quality 6061 aluminum that has been TIG welded and pressure tested in a T shape to mimic the OEM design.  The CNC machined 4 bolt throttle body flange features a groove to accompany a rubber o-ring to ensure a secure and sealed fit with the OEM Porsche Cayenne throttle body.  The T plenum features the necessary fittings for stock vacuum hoses and breather lines and includes a 1 way check valve needed.  Each T plenum is powder coated gloss black for an OEM look and includes new silicone couplers in black and worm clamps to secure it to the factory intake manifolds.  The installation of the plenum requires removal of the factory airbox and Y pipe to access the component.  Recommended installation time is approximately 3 hours.

Installation of the Agency Power plenum kit DOES NOT require the ECU to be flashed.  The factory ECU will adjust accordingly to the change in throttle body diameter.  However, corresponding mods including an ECU flash will only bring out additional power.  As it stands alone, the plenum kit will add a bolt on 20 wheel horsepower to your Porsche 997 Turbo.  As tested on a VR700 kit, the plenum added nearly 45 horsepower and 60 ft/lbs of torque.  This product features the Agency Power 90 day warranty and is Made in the USA. 

To View Install Instructions CLICK HERE


All Agency Power products come with a LIMITED LIFETIME warranty when you fill out this form HERE.
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About Manufacturer: Agency Power
Agency Power Industries LLC was developed out of the need to provide quality, functional, and fashionable racing products. Starting from sway bar endlinks for the Subaru WRX back in 2003, Agency Power now has over 300 part numbers for cars ranging from the STI, EVO, M3, 996, TC, and more. Based out of Arizona, Agency Power has established itself as one the core aftermarket companies for Subaru WRX STI and Mitsubishi EVO products. With new focus on the Porsche and BMW market, Agency Power is constantly developing new functional and race proven products. With dealers worldwide, the AP brand is recognized globally. Working with top distributers and tuners in the USA, AP can be found in Singapore, England, Canada, Australia, South Africa, and other parts in the EU.
Agency Power Performance Plenum and Throttle Body Porsche 997 Turbo 07-09 Reviews:
TEXT_OF_5_STARS Posted on 02/04/2011 by by Phillip
"Just installed the plenum and TB on my 997-1 Turbo. Understand that you will have to have a skilled installer to do this install. The plenum and TB hoses have to be trimmed so there is some fabrication that needs to be done. After the first drive I have to say there is a noticeable difference in power. The Turbos spool quicker and acceleration is impoved. I have the ECU flashed, GT2 spark plugs,, a BMC air filter and the Techart exhaust. The car freakin flies now. It's reallly fast. I highly recommend this mod. Be sure to ask when ordering for the fitting for the fuel breather line from AGENCY."


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