Sport mode vs. sport + mode ?

[Supe]

I have a 2015 428i with the complete BMW OEM factory m sport upgrades available at time of purchase . I am wondering , on my previous 3 series I had sport mode button and on this I have a sport + option available after the standard sport mode . I am wondering if anyone can help tell me what the difference is in this available setting? The reason I am asking is that I am looking at installing a performance tuner module and can’t tell if it will actually add anything performance wise to what is already on my vehicle . Anyone with help will be greatly appreciated.

[328 Power 04]

Sport+ allows more wheelspin and a bit looser guidelines for spinouts/slides from DSC system. Zero power difference.

[Supe]

Appreciate that help , I waited till my 30’s to get into cars and let’s say I got a lot of reading to do still , this forum has been a great resource thanks to like minded individuals like yourself