How is it well documented in the 2.0T?
It's fairly new and was only available in Canada until recently!
Anyway isn't there a competitor offering for the Stinger?
The JB4 for the G70 is the exact same as the one for the Stinger, since the G70 is using the exact same engines that the Stinger uses.
In the 9 months and 10k miles I've had a JB4 on my Stinger the car has been to the dealership maybe 4 or 5 times. I'm using stock plugs re-gapped to. 025. I have not touched the plugs since regapping them in April. The car will ru the same with the tune on or off.
There seems to be a lot of confusion that can be cleared up by searching the Stinger forum's tuning section.
Here's a thread on spark plugs and tuning for your reading pleasure.
How to avoid blown spark plugs in your tuned Stinger