2015 auto VT, 2013 manual VT × 2
There is no set safe whp for any given car. You need to refer to the thread I started that goes over these things. It would be safest to have the lowest power possible. What you're getting at is at what power level will be just as safe as the oem tune. The answer to that is not easy to answer as there are too many factors. The general answer is much higher than stock if you do everything right and the mechanical and electrical on the car is all good as well. Issue with some of the older cars is unknown condition of wear items that make a given power level safe.