Home > Performance ECU Chips > Ford Cosworth Chips
Standard chip for the Ford Sierra Sapphire RS Cosworth 2WD with standard YB engine and Level 6 (L6) ECU.
Ideal for running in your freshly rebuilt engine or for returning your chipped ECU back to standard.
This is the stock map for the 2WD Sapphire Cosworth, uprated ECU chips also available.
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