Fuel.....loss of power at 5k rpm

[untouchable]

hey i have a 91 tsi awd. and it has a super 16g on it and i lose power at 5k rpm, i know i need a safcII but i was curious if i needed anything else to help it better, it has a 255lph fuel pump 550cc injectors, but my other problem is i dont understand the safcII and was curious if someone who has used one or is using one could help me...or also Mike had told me about a 2g mas, and a data link or sumthing like it...if anyone can help or has suggestions please let me know......Mike