Pontiac Firebird Trans Am Ignition Diagnostics part 3: PCM to Optispark signals

This episode, we're continuing to use the Picoscope 4425a to diagnose our Trans Am ignition problems. This time it's the PCM signals to the Optispark. Please watch the whole video and remember to Like and Subscribe. Hit that bell for notifications and please leave your comments!
Products used:
Picoscope 4425a www.aeswave.co...
Special thanks to fellow CZcamsr:
ScannerDanner / scannerdanner

[@ryanhickenbottom9540]

I have a 94 Firebird formula just had my ECM re-done had all my shift points changed deleted all the antitheft Brand new transmission new coil new ignition module new throttle position sensor I change the OPTi spark two years ago long tube headers thing was running awesome now I’m having the same problem as you are Just ordered a new OPTi spark Good luck please keep posting new information thank you very much if I figure something out I’ll let you know

[@jessemackenzie6516]

As your AFR changes your firing line will respond. Lean = higher KV rich = lower KV. At that resolution you will really see perfectly level firing lines.

[@FearlessMods]

I'm guessing with the lower lines, it confirms my extremely rich condition (as indicated by the horrendous rich fumes!)

[@jessemackenzie6516]

@@FearlessMods yes

[@ryanhickenbottom9540]

Put a brand new OPTi spark in Dura last gold cleaned up all my ground points and it’s running again good luck with yours