Porsche 981 NHP Exhaust Performance Exhaust Headers 200 Cells
2013-2016 Porsche Boxster / Boxster S / Boxster GTS
2013-2016 Porsche Cayman / Cayman S / Cayman GTS/ Cayman GT4
WARRANTY: Lifetime limited warranty (Please read more about our warranty here)
RETURN POLICY: Please see our return policy here
WHAT'S INCLUDED: NHP Exhaust Headers (Bolts on muffler flange only *see more in description)
Usage: For daily driver and occasional track use (Beginners).
For medium track use or heavy track use only we don't recommend any exhaust headers with catalytic converters we only recommend Racing Exhaust Headers with no catalytic converters. The warranty is void for our exhaust headers with cats used mostly or only for racing purposes.
NHP Exhaust ha developed High Performance Exhaust Headers for the Porsche 981 Series. They are far superior to the factory exhaust headers.The factory Exhaust Headers have flat primary piping with a restrictive catalytic converter. If you are looking for that extra power and sound look no further.
Please continue reading below. You can also oversize the pictures below.
48mm Diameter equal lenght primary tubes
3 in 1 Race Collector
EU4 200 Cells Metallic Substrate Catalytic Converter NO CHECK ENGINE LIGHT Emission Compliant
Cast Flange (100 % perfect seal)
Made of T304 Stainless Steel
Perfect fitment (No modifications necessary)
Lifetime Warranty to the original owner
The exhaust headers can be installed with the factory exhaust system and aftermarket exhaust systems as well. When installed with the factory exhaust these perform very well and you can expect a better engine response with improved exhaust sound with increaded "exhaust burps" when downshifting or gas pedal release. When combined with the NHP Exhaust System with sound valves your exhaust sound will be greatly improved and will provide you with race feel sensation when the valves open up.
Because of the 200 cell cats no power will be lost at the lower rpm band, we havent dynoed however butt dyno feel is more power and engine response especially at WOT. We estimate the addition of these headers to provide approx 8-10 HP and 12 to 15 ft lbs of torque.
We guarantee you a perfect fitment and no check engine light*.
Techninal support is available via Text, Phone, e-mail we have no problem to offer support to anyone who will install these exhaust headers.
*Based on our testing on our own 981 the NHP Headers did not trigger any check engine light however because of the nature of 200 Cells Catalytic Converters it's not impossible to experience a check engine light.
IMPORTANT MESSAGE ABOUT 200 CELLS CATALYTIC CONVERTERS.
For the State of California our Exhaust Products are not C.A.R.B.
Our Exhaust products have no guarantees about passing emissions in your state.
Our High Performance Exhaust with sports catalytic converters are built and meant for off-road purposes.
Our Exhaust Products “Lifetime Warranty” does not cover catalytic converter error codes.
Please note that when installing High Performance Catalytic Converters there is a possibility that you may get a “Check Engine Light” for Catalytic Converter Inefficiency or other Catalytic Converter related error codes. This may or may not happen, this is due to lowering the Cell Count of the catalytic cartridge, in other words we need to work with the same surface area with a lower cell count, most OEM Catalytic Converters will have 600 to 800 Cells per square inch, High Performance Catalytic Converters are only 200 Cells per square inch. If you get a check engine light it’s not because the product is defective but it’s the ECU picking up the difference and relating those error messages.
There are several ways to deal with this.
Most Efficient is the Flash the ECU with performance software, make sure to tell your tuner that you have 200 Cell Cats. This is the most expensive and most efficient.
Use 02 Bungs, many have been successful by using 02 Bungs however this is not 100% Bullet Proof.
Purchase OBD2 Scanner, read your codes and erase them. For those of you who are not annoyed by the use of a scanner on a weekly basis this is the cheapest solution.
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Porsche 981 Boxster / S 981 Cayman / S NHP Exhaust with Sound Valves
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PRODUCT FITMENT :PORSCHE 981 BOXSTER/S/GTS, CAYMAN/S/GTS/GT4
WARRANTY: Lifetime Limited Warranty click here
RETURN POLICY: Please see our return policy here
WHAT'S INCLUDED: NHP 981 Exhaust Catback Exhaust (See options for Valve Control)
The NHP Exhaust for the 981 is what you have been waiting for, you think the factory PSE exhaust sounds amazing? Yes it does however doesn't come close to the NHP Exhaust, this exhaust will make you want release that gas pedal over and over just to hear those "pops" the sound is absolutely phenomenal.
Fitment is 100% you don't need to modify anything, the NHP Exhaust comes with a custom exhaust bracket to support the exhaust, this custom bracketreplaces the factory exhaust bracket.
Made entirely of T304 Stainless Steel with the NHP Signature grilles, our actuators are now built with heat shields for even more protection against debris and extreme heat.
Please continue below for oversized pictures, video and more...