Quote:
Originally Posted by OrbitalEllipses
I was looking at SRT's exhaust and their axleback section has less bends; I don't pretend to know anything about exhaust tuning, but that was something I liked. I understand your section bolts to the stock midpipe, perhaps some of us will be willing to replace that? That brings me to my final point: compatibility. I never bought any TurboXS exhaust pieces because it was "proprietary" in that you needed adapters to run certain parts with other brand parts. Sometimes I like to mix and match, I don't like being forced into using certain parts for compatibility's sake (I think APS Australia did the same thing).
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Two notes on this and I'm going to put them in bold because it seems like nobody is reading what we have written on this:
1. Our single exit 2.5" straight pipe makes the same power as the bed of snakes.
2. Our full exhaust system w/ factory midpipe made the exact same power as our full exhaust system with 2.5" midpipe
Forget what your eyes tell you about how an exhaust flows based on how it looks. A well laid out mandrel bent system will flow just as well as a straight shot system. Not only that but our exhaust is dual 1.75" out the back and still flows the same as the single 2.5" x 14" long track pipe. If you don't believe me, ask BMW GmBH about their inconel S38 bed of snakes headers:
One thing to note, we have done quite a bit of testing on the Y design in the back as well as its orientation relative to the final bend in the primary exhaust circuit. When you lay it out horizontal relative to a planar bend before it, you load up one of the two circuits more than the other. Here's our original muffler delete design for the hatch - it was extremely biased to the passengers side:
For that reason we run the Y vertically rather than horizontally. There is a purpose in almost everything that we do in our designs.
Another major thing to consider is that catback exhausts that have equal primary and secondary circuit sizes tend to drone like crazy inside the cabin. They sound wicked outside the car, but they'll rattle change in the map pockets in your doors at the same time.
Plus, why would you want to buy system that includes a midpipe that does absolutely nothing for you when you could be using that money to buy a header that does everything. Just sayin, we're one of the only companies who won't sell you parts that you don't need. Our slogan isn't Function/Form for nothing.
Orbital, your point about forward and backward compatibility to factory parts is something that is at the foreground on every single design we build. The only thing that would convince us to develop a standalone system that is all-or-nothing is if there was a major gain to be had. And on this car, that does not exist unless it involves an extremely radical header and overpipe design.
And I'm sorry we didn't get the GD exhaust released before you got your BRZ. You would have loved it. Going to release that in the next week or two. :-D
J