It all depends on how well you work your sa. Bringing a coffee and asking how his wife and kids are never hurts, but thats basic relationship building skills.
Put yourself in his spot- his job consists of listening to spoiled soccer moms bitch and complain about the broken X3 thier husband bought for them. If you have the basic skill to show a little empathy and friendship you'll pretty much get what you need.
Also ensures you don't get stuck with a 328 xi loaner
