immortality wrote:The Skid Factory did a recent video where they "upgraded" a genuine VL HDT with efi and Haltech using a VT V8 distributor for timing with coil per cylinder ignition. When they put it on the dyno it had a huge problem with ignition scatter. They then upgraded to a crank trigger using a 36-1 trigger wheel and the timing was rock solid after that.
I've had the same experience with 5L cars, unstable ignition, but more importantly I have never been able to log/tune real time due to radio noise the v8 ignition system produces.
Only time it's worked fine is in delco/5L conversions into other cars, a Torana and a Monaro in my case, but native commodore... nope... spammed with DA errors. Haven't been able to work out the exact cause so I speculate it's either the loom routing or some other complex overall commodore electrical system + ignition interaction.
A crank trigger upgrade should solve these issues.
Had 0 issues with V6 cars.