I have a 94 530it that i got cheap and have been fixing up. Just replaced the brake booster and got my brakes working great. Took it for a drive and car accelerates very slow and will not go above 40mph. I can see the rpm's shifting, but car takes forever to move. The first time it cleared up and car drove great, parked it at home then next day it started driving slow again and now it's staying that way. Does this sound like limp mode? I have disconnected the battery for a day,no help. I dont have a transprogram message. Thanks