My 4/4 is tuned a little bit but still in balance with her abilities. TBH tuning ist not so necessary and I keep the power as is now. It was and is more the fun and curiosity to play with her than any need to become more satisfied. Playing and driving all the time, the air intake, the manifold, actually camber and toe, I will report, and so on...and now driving...what a beautiful day. No car I have or had makes more fun.