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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...

Is this tune "safe" if I have long tube headers on the car? I understand you don't tune "for headers" anymore but will the tune adjust itself?

Do you need to order pigtails if installing on a 2018+? Or can the OEM ones just be re-used?

Awesome. Thank you for the feedback. I’m in NY state so definitely staying catted

I’m running this catback now and it’s definitely grown on me. Did you install headers later? I’m curious how much louder it’ll be, I love the drone free highway cruise right now

Any downside to long term use on a DD? The 60D looks great to me

Do you have “flex” tunes that support multiple octanes or 93 only? Can you run 87 on a commute if you don’t get on the throttle too hard?

Is Lethal Doing the same thing?

How is the high flow cat option? Still available? Are people commonly seeing CEL?