supercharger automatic problem

Hello . I have mounted a vortech supercharger from Ess tuning (Norway) in my bmw 840 ci 1993 mod. m60b40. (7psi) I have a problem with the 5 speed automatic gearbox , it works fine in e (ekonomi) , but in s (sport) it only works from first to second , after that the gearbox goes over in emergensy modus when shifting gear up at 6500 rpm . I hade service on the gearbox, changin oil and oilfilter , but it is still the same. Is there somone her that can help my? Frendly regards Svein Egil Frøyland from Norway