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    Fault code DIAG -1 (ECU with Chip)

    Right Chaps! Need your help here! I've just recently fitted the race air kit, with a chip to match, however, once reconnected the ECU, The fuel pump dose not engage! and the EFI display flashes then produces a DIAG -1 message! Being luckily enough to have two Mille R's I swapped the other ECU...