Quote:
Originally Posted by mikewills
Not sure if this question was asked, but are there any before/after dyno runs?
Also, why did you guys choose to use a muffler-less design?
V/r,
Mike
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Thank you for asking a valid question here. Certainly a topic to discuss for sure.
Here is rather a quick answer for you.
As mentioned in earlier post, Several Independent 4-wheel chassis Dynamometer tests are in progress, and results will be reported to us shortly.
Meisterschaft exhaust unit utilizes the largest piping in industry, single 76mm inlet pipe (3inch) into dual branch 66mm piping (2.6 inch) connected to quad 63mm (2.5inch) neck connections. That is again the largest piping anyone has used for aftermarket 1M exhaust.
And here is the weight info for you:
Front Section (Bolt on) OE system weighs 27.5 LBS
Meisterschaft Resonated Mid (SUS): 23.5 LBS
Meisterschaft Non-resonated Mid (SUS): 20.5 LBS
Meisterschaft Resonated Mid (Ti): 14.3 LBS
Meisterschaft Non-resonated Mid (Ti): 9.7 LBS
Rear Section (Bolt on: Including the connecting pipe section)
OE system weighs: 26 LBS
Meisterschaft Super GT (SUS): 21 LBS
Meisterschaft Super GT (SUS) without the connecting pipe (rear axle back alone): 16 LBS
Meisterschaft Super GT (Ti): 12.5 LBS
Meisterschaft Super GT (Ti) without the connecting pipe (rear axle back alone): 9.0 LBS
Knowing how special this 1M vehicle was going to be,
We have started this 1M project with 3 Solid Non-compromising goals.
1. Significant weight reduction from OE unit
2. Solid power gains with quicker throttle response.
3. of course, Powerful & Aggressive Meisterschaft Exhaust Sound.
Unless you go with the full titanium unit,
with rear muffler "canister" design, it actually weighed more than the stock OE unit
(especially with our large piping size, which we had to keep for performance and sound reasons).
Fortunately, with good amount of experiences with N54 Turbo motor, which we were very familiar with, since we have been offering 135i and 335i full cat-back exhaust products for several years already,
we were able to control the sound (drones and Natural frequency characteristics) by placing (or de-placing) a middle resonator in the front section (Section 1), but keeping the rear muffler design (section 2) very similar to the design of our own Meisterschaft "R35 GTR" exhaust systems,
which is also non-canister design and widely known as one of the best exhaust system (Sound and performance) for the current generation of GTRs (R35).
Again, we would be very interested to know what other brands are claiming on the weights of their aftermarket exhaust systems since the stock OE units are pretty light to begin with (26.0 LBS + 27.5 LBS = 53.5 LBS) as well as what power gains are.
Pretty certain, some aftermarket exhaust units will probably be heavier than the stock unit,
and if that's the case, we would have to say: it was planned wrong and also engineered wrong,
or did not have neither of it from the begining.
Overall, with our canister-less rear exhaust design, we were certainly able to acheive our 3 set goals,
If you have any further questions, let us know, we will find out more specific details about the unit from our factory engineers and will inform you with accurate information.
GTHAUS