Aces Killshot Fusion EFI Swap

[scotts90ranger]

Technically yes timing but what's most likely happening is the spark is jumping to another cylinder with the offset. It's basically how the HVS flat top distributors that GM used in the late '90's work but with that they have a separate crank sensor for rpm and just a 1x cam sensor. With those you have to align the cam sensor to TDC to center on the spark output contact things...

 

[85_Ranger4x4]

Technically yes timing but what's most likely happening is the spark is jumping to another cylinder with the offset. It's basically how the HVS flat top distributors that GM used in the late '90's work but with that they have a separate crank sensor for rpm and just a 1x cam sensor. With those you have to align the cam sensor to TDC to center on the spark output contact things...

How I picture it is at low rpm it basically runs at base idle. As it revs it starts playing with the timing advance and it walks it from one cylinder to the next.

 

[scotts90ranger]

How I picture it is at low rpm it basically runs at base idle. As it revs it starts playing with the timing advance and it walks it from one cylinder to the next.

Yes, if it's off enough it'll move to the next cylinder in the firing order once the advance is enough to make that contact closer than the one it's supposed to go to