Just put a Flowmaster Super 40 on my 24’ Z71 Tahoe. This was just a muffler swap, still have the OEM quad tips out back. It has a nice cold start and low growl while driving. I’m pleased that there is close to 0 drone on the highway. It’s a little funky at times with cylinder deactivation but L9 clears that right up. If you wanna hear your 6.2 do its thing I recommend this upgrade.