VegasAWD Posted October 28, 2021 Report Share Posted October 28, 2021 Just to verify, the plug-in ecus cannot do sequential spark, therefore, I would need to wire any coil setup as wasted spark on my Vr4+? Thanks. Quote Link to comment Share on other sites More sharing options...
INSW20 Posted October 28, 2021 Report Share Posted October 28, 2021 Mine has the COP expansion harness and runs sequential spark. Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 28, 2021 Report Share Posted October 28, 2021 The VR4 ECU can do sequential, but the fuel pump relay is on ign 4 so you would have to move that to something else, there is not a whole lot of spare outputs though. Maybe move fuel pump to inj5 which was the purge valve. Quote Link to comment Share on other sites More sharing options...
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