This is interesting - just got email from MB Fletcher Jones Chicago that they now offer AMG tuning for a handful of AMG vehicles here..... says 3500 per tune and about same performance gains as any other tuner.

Ill call them tomorrow as it would be interesting if they offer this tune with full factor warranty in tact or any compromises there???

UPDATE - I called the dealer and they state full warranty support at their dealership with this tune. It a tune they OEM from a US reputable tuner who they didn’t share the name of. Tune with warranty in tact very tempting.

https://www.mercedesbenzchicago.com/...rmance-tuning/

This seems dealer specific

for instance Orlando Park benz has been renntech authorized for years

Just tried calling them and no one was available to talk and was waiting for 10 minutes on hold so I submitted the online form to find out more