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Adding Double Helix X-Pipe to Thermal R&D Catback- How Loud?

n2ofusion

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Feb 14, 2021
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Location
Upstate NY
First Name
Matt
Vehicle(s)
2020 Mustang GT 6M
I installed the Thermal R&D catback a couple months ago and generally find it too quiet / too European sound (otherwise stock 2020 GT 6M).

What kind of volume are we looking at with the double-helix X pipe and leaving these axle-back Helmholtz resonator chambers only? I have been really excited about the swap but now wondering if I'm going to regret it.

This is what would remain as the axle-back:

1625249496317.webp


This was the full original system:

1625249598660.webp


Appreciate any advice.
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