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ryan riley says: i went from a cheaper unequal length header to these tomei equal length header, and i love them the sound is unique but tep end they really sound clean and like a subaru should. great product would hi ..
5 of 5 Stars!

anthony sasso says: JUST GOT MY BOX IN MAIL AND SPED OVER TO THE MUFFLER SHOP TO HAVE IT INSTALLED ...ITS THE BEST MONEY IVE SPENT IN A WHILE . SEAMLESS INSTALL THE PARTS WENT IN LIKE THEY WERE MADE BY MERCEDES THEM SELF ..
5 of 5 Stars!

Jesus Mendez says: springs were good but not the lowering rate they state.. looks higher on the front end compared to eibach springs. hopefully they do get to settle and lower a bit more but as of now.. dont really like ..
3 of 5 Stars!

Mark Ishak says: Just purchased the B&B exhaust to replace the HKS Carbon Ti. Very deep sound, even with the header, up pipe, and downpipe. Sound levels aren't necessarily low, but strong, and not bad at highway cruis ..
5 of 5 Stars!

Jimmy crutsinger says: I purchased the voltex rear carbon defuser for my 2007 sti limited finall got the product all I can sey is definitely worth the wait! And it looks Amazing! !! ..
5 of 5 Stars!


Agency Power Adj. Blow Off Valve Porsche 996TT 01-05
  • Agency Power Adj. Blow Off Valve Porsche 996TT 01-05
  • Agency Power Adj. Blow Off Valve Porsche 996TT 01-05
  • Agency Power Adj. Blow Off Valve Porsche 996TT 01-05
  • Agency Power Adj. Blow Off Valve Porsche 996TT 01-05
  • Agency Power Adj. Blow Off Valve Porsche 996TT 01-05
  • Agency Power Adj. Blow Off Valve Porsche 996TT 01-05
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  Product Information
 Price: $300.00 
  Model: AP-996TT-150
  Reviews: (1)  
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Agency Power has a brand new Blow Off Valve solution for the Porsche 996 Twin Turbo cars. The Porsche like many European cars has a sensitive MAF. Running a 100% vent to atmospheric valve on most stock or mildly tuned vehicles will cause check engine lights and vehicle performance issues. Since the stock Bosch plastic diverter valves leak boost and robs you of power, Agency Power has developed this single Blow Off Valve kit to give you the best boost consistency and sound out t HERE. Having dual diverter valves is not necessary as the F-Hose is straight through so both valves get the pressure equally. The Agency Power Blow Off Valve has an upgrade spring and piston design to handle up to 50psi of boost! The valve has an adjustable top to help set the stiffness of the spring depending on your vehicle setup. Whether you are running .7bar or 1.3bar, the valve can give you optimal boost consistency. In addition to being adjustable, the valve can be setup in 3 different configurations. You can set it up as a full recirculation like a stock valve, full 100% atmospheric for high horsepower race cars, or even 50/50 for street cars wanting that Blow Off Valve sound.

The Valves are made from CNC machined 6061 aluminum with nylon washers and a brass piston to keep movement and air venting for the life of the car. Each body has the Agency Power logo laser engraved on it and the adjuster knob is triangular for easy grip. The single Blow Off Valve kit works on all Porsche 996TT from 01-05 and fits in the stock or aftermarket Agency Power F-Hose. Each kit includes 2 plugs for the factory holes and new worm clamps. Additional plugs or horns can be purchased separately. Valves come in polished, red, or black.

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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.


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