Programmable Ignition Distributor 123 B18/B20

Volvo B18/B20 programmable USB-connection Two different curves in the distributor simultaneously, possible switching between them from the cab with a switch. Can be changed live! Boost retard, meter on the computer screen, etc.. New coil is recommended because old coils are often too low a resistance, is not stable in operation. (Do not go below 1ohm operating)