Faint engine ping under load when car is warm. 2014, engine replaced 7k miles ago.

[bdmcleod]

Can you post a sound clip? These engines make some unique sounds, but pinging is not one of them.

I've tried to use my phone to get the audio and the noise is too faint to be picked up by the mic.

[bluesrt]

you may have a slight exhaust leak, that will sound like a faint ping

[Taximan1]

you may have a slight exhaust leak, that will sound like a faint ping

very true. especially after "heavy" work has been performed and many bolts are disturbed (like an engine replacement)
my wife's escalade I thought had a rod knock after the rear main seal was replaced. (150k miles, on a 2009). Turned out the pressure fitting on the flex pipe for exhaust was just loose, during reassembly. .

[bdmcleod]

you may have a slight exhaust leak, that will sound like a faint ping

I'm in StL too. You up for giving it a listen and letting me know your thoughts?
Assuming your city is accurate....