If you set the jumper wire it will hard-set your timing to 8 degrees. I run mine 2 degrees advanced on top of that, seems to work better for my motor on the 96. Before there was a bit of lag about 2700 RPM's.
The jumper wire does not hard set the timing to 8*. What it does is disable to electronic timing advance, so you can set the base timing to 8*, or 5*, or whatever degrees you want it set at.
Sean, look at the sticker under the hood. It tells you which pins in the plug to short to lock the timing, so you can check it.
Ah hell, I might as well just tell you.
With the tab up on the connector, the pins are labeled like this....
123
456
You short pins 4 & 5 together and that disables the electronic advance on the timing.
If you look at that underhood sticker, it should also tell you what the timing should be set at. It probably says 5*.
It is pretty easy to set/check the timing. Warm up engine to operating temp. Shut off engine. Short pins 4 & 5. Start engine and let it idle (should be right at 800RPM). Hook up timing light. Shoot light at crank pulley and see where the timing is set. To adjust it, loosen the distributor bolt and turn the distributor (you can do this with the engine running, just be careful of the spinning fan blade and belts). Once timing is set, tighten distributor bolt and unhook everything and remove the jumper from pins 4 & 5.