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Also, this 'change' of sorts is one that _allows_ us to run a 3" primary circuit - we will still be offering the 2.5" primary circuit as well. In terms of performance benefit, we still need to test using a 3" midpipe on a factory vehicle.
Our testing of the full dual exhaust (pictured in the thread above) resulted in about 6ft lb of torque in the midrange gained over the standard axleback or track pipe. We still need to test a single 3" midpipe circuit and the 3" to dual 2" axleback to see if we get similar gains. Just as a note - our main reason to build the dual circuit system from the middle of the car back was simply to box it up in a smaller package so that we could ship to our friends down under in Australia. The other unknown at this point is whether a 3" midpipe on our 2.5" to dual 1.75" axleback (or our single 2.5" track pipe for that matter) would generate similar midrange gains - it very well may. We will be testing that also.
Jason
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