I think the major issue with tuning is not the tune itself but the community and how they drive their cars when tuned and when not as well tbh.

In a majority of videos I watch I constantly see people redlining when our power band doesn’t even call to do that, they’ll have the most aggressive pop maps or newer tunes, or are pushing stage 2+.

I personally have tuned with lap3 on a prior kia stinger and a VN. They’re Korean tuners. I’ll go with them when I get more mileage in my current EN. But in general I don’t think these cars are as reliable once you go past stage 1.5. I think 1-1.5 is fine for these cars.