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Hi Guys, Just had a G4 fitted to my mr2 1zz turbo. I will be getting it set up in January, it has a base map loaded. The issue is, on the factory ECU the car turned over perfect, since the G4 is fitted it cranks slowly (almost feels like the battery is low). The existing battery was 3 years old, so I switched to a new one today, but the same issue? The chap who re-built my engine and fitted the ECU said that aftermarket ECU's can take more juice, but I don't buy that this is causing the slow cranking. I read on the forum that timing could effect starting and cause slow cranking? Could this be right? The battery as I said is good, alternator is good, even with the new battery fully charged it cranks slow (and takes a while to start assume that is the map). The earth is good etc, and starter. Any ideas appreciated, I don't want to take it to the mapper and it die / not start. Thanks,