I got a Volvo b230ft that I'm running on my v0.4 board. The car runs decent if I turn the idle down to around 450 but when set around 550-600 it idles normally but when I check the tkmingr mark with a light, a 50-60° retard can be seen about once every second at around 30° ATDC accompanied by a flame spit out the exhaust(8 inch turbo dump). Remember, this is all at idle. Problem gets worse and flames get bigger(not a problem ) as revs increase.
Played with the resync every cycle and trigger filters, checked the trigger signals w o-scope with around 50us variance. If I'm correct that is around 3° variance which is what I am seeing on the crank pulley with the light but nothing that indicates a sparatic retardation.
Any help or advice is greatly appreciated.
My wallet is empty because my car doesn't run.
Volvo b230f+t powered 74’ super beetle
81’ Datsun 280zxt