have a 2002 malibu that had a 3.1 and i swapped it for a 3.4 out of a 2000 Gand AM first time using hptuner i know the timing is off but lost how to fix
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have a 2002 malibu that had a 3.1 and i swapped it for a 3.4 out of a 2000 Gand AM first time using hptuner i know the timing is off but lost how to fix