Misfire getting worse the hotter the engine gets. Sometimes cuts out, once left for 20 minutes you can sometimes drive off again with no misfire until it gets really hot again. Best way i can describe.
Replaced:
Coil
Leads
Dizzy
Rotor Arm
Plugs
Fuel Filter
Injectors
Head (Previous one had cracked)
CTS
Idle Valve
Intake air sensor
Rolling roaded perfect then as soon as i got back it started. Phase 1 superchips with Walboro pump standard fuel pressure with standard injectors. Now standard GM plugs. Had previous misfire problems with Saab red injectors, swapped for rolling road and made perfect power. Any ideas as its at a stage where im close to getting rid. Had on going issues for 6 months.