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Connecting an Additional ECU for Engine Power Increase

Model: Volvo S40 MK 1 - Years 1995-2004
Part: Accessory kit

An additional replacement ECU is commonly used to increase engine power by regulating the injection system, pressures, and stoichiometric ratios. To connect it to the connector at the end of the rail, remove the engine cover. Disconnect the original connector and connect the additional ECU's connector (already positioned earlier, after finding the best cable routing) which sends the correct signals to the original ECU via the interface that connects to the original connector. At this point, cover the engine with the cover and the car will be ready.

Updated on 8 February 2026 by ScegliAuto

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