Base ignition is:
Connect tacho to warm engine.
Air con off tran in neutral or park.
Connect timing light.
Highlight timing markd with white pain, chalk or correcting fluid ( while engine is off )
Put into self test diagnostic mode or ground STI terminal.
Start engine which will go through self test procedure (signalled by rev increase) and then run at base timing.
Loosen distributor clamp and adjust timing to specs per handbook or tuneup sticker in engine bay.
Tighten distributor and recheck base timing.