01–06 E46 M3 S54 MSS54 CUSTOM N/A TUNE (S1/S2/S3)

01–06 E46 M3 S54 MSS54 CUSTOM N/A TUNE (S1/S2/S3)

Brand: My Store
220.00 USD In stock Buy at Merchant

This BMW E46 M3 (2001–2006) ECU tuning includes Stage 1, 2, and 3 modifications for improved throttle response and conservative performance gains.

  • The description claims conservative, data-driven gains.

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Takes ~2 minutes. No storefront changes.