I have owned the Gruppe M (version 2) exhaust system for several months now, and I can just say that it is, arguably, the BEST sounding exhaust system out there right now. I really don't care what those other vendors say
but this observation, however subjective it may seem, was reaffirmed at the last NSXPO at Road Atlanta. Coming down (or up) the front straight at Road Atlanta, going up that hill, the exhaust system just produced a very high pitched sound, described by others as Formula One-like. My car is supercharged (Gruppe M), and whether this had anything to do with the sound, I am not sure, but the combination sure sounded great.
In contrast to what was posted previously, the price of this exhaust is not over $3200, but $2670 (including shipping from Japan, US shipping to be added). It retails in Japan for about $2800, without overseas shipping to the US, but I am able to negotiate a good deal with Gruppe M for US owners, and just passing the savings on to everybody who wants the best <g>. Group buys are also possible, with substantial additional savings.
The exhaust system comes with specially designed catalytic bypass pipes which combine the front and rear header outlets into one, and bolts on to twin mufflers that lets exhaust out through dual tips (version 2), or in its current configuration, single oval tips (version 3) each side. This design achieves two things: it allows for the right amount of backpressure to help produce more low end torque than any other exhaust system, and it combines the front and rear exhaust pulses to simulate a much higher pitched exhaust note. Gruppe M also spent a ton of R&D into the internal design of the muffler units, to further enhance the sound.
Construction is top notch, welds are impeccable and are of F1 quality. The Gruppe M seems to be really strong, and seems to withstand the rigors of forced induction extremely well. In Japan, it has been in use for several years without any problems, including supercharged cars.
I am hoping to have some sound clips available soon on a website somewhere, but here's a review posted by one of the owners.
http://www.nsxprime.com/ubb/Forum13/HTML/000071.html
More references upon request.
Regards,
Alex
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AV Motorsport
Importer of Gruppe M and other fine Performance Parts from Japan
Cell (562)896-6399
Voice/Fax(562)690-8479
Email
[email protected]
[This message has been edited by GruppeMUSA (edited 24 November 2001).]
[This message has been edited by GruppeMUSA (edited 24 November 2001).]