Summary

00:00 - Jake has asked, how difficult is it to get a stock ECU to run in parallel with an aftermarket ECU? So very very dependent on the, how complex the car is that you're tuning, basically the generation of that car, how old or how new it is.
00:16 As the cars have become more sophisticated and the ECUs have become more sophisticated, it is getting more difficult to piggyback a factory ECU because the ECU's starting to look for open circuit signals on things like the injectors.
00:31 It's got a feedback from the ignition coil so it knows if there's a misfire, things like that which are very very hard to replicate.
00:39 On some of the older vehicles though, it was quite easy to piggyback the system.
00:43 Something we did a fair bit so that we could keep a factory automatic transmission working.
00:50 We'd just have the factory ECU thinking that it was controlling the engine but the aftermarket ECU would be piggybacking the key signals and then controlling directly the fuelling and the spark but yeah on a very current generation car, that would be all but impossible.
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