Any interest?
Still trying to read my '18. I installed the latest beta and just now found the option "E92A, GM SIDI 2017+" and hoping to try that tonight after work. SIDI is Spark-Ignited Direct Injection. If that doesn't work I'll try "E78A, GM, 2017+". Otherwise I might have to pull the ECM and get HPT support some numbers to add support.
Progress on the First Gen tune will still continue. PM me if interested in a copy of the first gen tune.