MRC Chips for the Audi urS-cars

Stage 1 Chips

Chips only.

These chips, for use in the 4A0 907 551 AA ECU (AAN engine in the 1992-1997 Audi S4 and S6 models), provide superior fuel and boost management consistent with maintaining a 2.5 bar MAP (Manifold Air Pressure) limit as required by retaining the stock 2.5 bar PT (Pressure Transducer). Power gains on the order of about 20 to 25 hp are available. We normally do not supply these chips. The Stage 2 chipset is a far superior setup for not much of an increase in price.

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