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There are long threads from both the BW xpipe and the ESS xpipe. I have both, their Xs are both forward-placed in the same place. I don't have any issues. The issue is very noticeable, it isn't something you can miss.
On one car I have the BW LT headers + catless BW Xpipe and have zero hesitation. It has used both the AA and the BW muffler.
On the other car I have the ESS catless xpipe and have zero hesitation. It has the Evolve Valvetronic muffler permanently on the ON/loud position.
Two friends have the same BW Xpipe and both added cats in the secondary position, one with the ESS tune and one with the Alpine tune.
The ESS car works perfectly
The Alpine car bogs like crazy
Some have theorized that if you have a stock rear section it is more likely to bog. We are testing that theory out.
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