No dyno data other than the butt dyno. Desnork, added Top Gear sport headers, and Soul Performance X-pipe tips. Stock mufflers.

Here’s a before and after video compare. Shot with a phone, so audio is not the best, but you get the idea.

What does your butt dyno tell you? Any loss of low down torque?
any CELs or codes?

Feel no loss in torque on the low end, and the rumble and sound is much deeper. No CELs and very pleased with the performance. Thick flanges and nice quality construction. It will take a few weeks of driving to get fully broken in, so I suspect some minor changes in sounds and performance.