B8 S4 Stage 2 tune + Pulley. Will work on all 3.0T engines using Simos 8.4 ecu's. Requir..
A super charger pulley upgrade that doesn't cost more than your car payment. Also include..
B5 Audi S4 2.7T / Audi A6 2.7T / Audi Allroad 2.7T Custom Stage 1 Tuning with Revisions
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