*POP!* The sound of SC1's differential coming out of the casing after a 5K drop.
You're definately doing something wrong if you can't get the tires to spin after dropping from 5K, I've seen a geo metro 3 cyl light the tires up from a higher RPM drop. So if a crap car like a metro can do that, you sure in the hell can. Does your car have traction control? If so, turn that crap off. Just by turning that off I can get the 93 SC2 AT to bark the tires going into 2nd. Describe how you are doing it and how you are relesaing the clutch. The intake does not have a thing to do with that. What gave you that assumption in the first place? An intake is going to help the car out, not hinder it.
Also, maybe it's a good thing your car isn't burning out. I'm guessing you haven't heard about the crappy open-end differentials saturns have? What it is is that when you do a burnout one wheel will spin faster than the other, casing heat in the differential casing and causing the differential pin to come shooting out of the transmsission casing creating a baseball to softball size hole. So just don't do it. This has happened to two of my friends with their saturns by doing the same crap, doing burnouts a lot and driving like retards.