I had the same problem at the track in my less powerful 99 si. I just lowered the tire pressure alot and kinda feathered out the clutch. if you just hold it at 3500 rpm's and drop it, it is going to spin, unless you have slicks. If you do decide to get slicks you can easliy drop it from 5-6 grand and be ok, but watch out for snapping half shafts. so next time out try that and maybe that will work for you, it works for me.