Z4 ecu
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From: never far away from my impreza
The Z4 comes from a 260ps post Sept 1994 WRX Saloons and runs 12.7psi whereas the earlier ECU (U8, W6, W9, 2C) in the 240ps Saloons run 11.47psi.
The fuel and ignition map in a Z4 is alot better then the earlier ECU and is actually the bas map used in the UK Prodrive upgrade.
If you drive a WRX wagon then the Z4 will work best with a TD05 fitted. With the TD04 boost control will be a bit hit & miss.
The fuel and ignition map in a Z4 is alot better then the earlier ECU and is actually the bas map used in the UK Prodrive upgrade.
If you drive a WRX wagon then the Z4 will work best with a TD05 fitted. With the TD04 boost control will be a bit hit & miss.
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