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- Wed Apr 20, 2016 12:18 pm
- Forum: General Motors
- Topic: Newbie doesn't know why "USE 4K" is in red
- Replies: 0
- Views: 4780
Newbie doesn't know why "USE 4K" is in red
TunerPro is saying "USE 4K Mat Selector" and the "USE 4K" part is in red which I suppose is an indication that something is not correct but I am not sure what? The engine was running and had been for ten minutes. The MAT sensor does appear to be at least partially functioning, th...