Fitment Guide
06+ Cayman/S
05+ Boxster/S
Introducing the new 987 Boxster/S and Cayman/S NHP Cat-Back Exhaust System with exhaust tip, fully constructed with T304 Stainless Steel, amazing high quality welds, mandrel bent tubing, stainless steel flanges, heat shields on tubing to protect suspension against high heat, heavy duty muffler support clamps.
This exhaust is a straight through piping system, the second set of catalytic converters found on the factory system is deleted, by deleting the secondary cats it helped achieve a more aggressive sounding exhaust when this exhaust is installed with the factory headers. This exhaust will not trigger any check engine lights as the O2 sensors monitor the first set of catalytic converters only, they do not monitor the second set of catalytic converters.
We have developed this exhaust system to use all factory mounting points, no drilling, no modifications required, this exhaust will bolt up to the factory headers or aftermarket headers. There is only one tiny mod to do the the OEM T-Pipe clamps, this is covered in our installation instructions, again tiny nothing major.
One important factor that we worked on was to get no Cabin Drone, as many know they are many good quality and good sounding exhausts out there but one major problem is the drone, it's nice to get big sound for the first two weeks, after that it becomes annoying and unpleasant, well you can say bye bye to that kind of results, the NHP exhaust when compared to stock has no drone, this exhaust produce more or less same interior cabin noise as the factory exhaust. How did we achieve that? With unique internal piping design inside our mufflers.
What can you expect from this exhaust? Well we consider this exhaust to be a low key exhaust, what we mean is that on idle and cruising speed it sounds good nothing crazy or too aggressive, but when you step on it at WOT that's when the most beautiful sound is achieved that's when you get satisfied, in other words when you ask for it and step on it that's when it sounds the most aggressive and sounds really good, at cruising speed you will like it as well it sounds better then stock but not to aggressive. Look at it this way if you need to make a phone call at cruising speed its possible, you want to talk to the passenger you could. For those of you who are looking for a highly agressive exhaust at all RPM range this exhaust is not for you.
How does the car perform with this exhaust? We can guarantee you that no low end power or high end power is lost, it responds just as good as the stock version if not better, what we highly recommend is to combine this exhaust with some software tuning to fully take advantage of this exhaust. Our main goal with this exhaust was to achieve a nice sounding exhaust with no cabin drone and to at least match or exceed factory power.
We have done some dyno testing using a Dynapak Dyno Machine which is an accurate Dyno Machine. We have 5.8 HP Gains and 14.6 FT/LBS Gains, the dyno is the Version 1 Exhaust with factory headers. We have not done any dynos for Version 2 Exhaust.
