Optimized steptronic transmission software, recommended for both for NA and Supercharged applications. Increases shift firmness under heavy acceleration and increases the transmissions capability to hold power during shifts. The software incorporates a higher 6300RPM shiftpoint, and must be used in combination with ESS Performance NA software or ESS SC software.
When you order this product, you will receive information on how to remove your transmission control unit for shipment to a ESS reprogramming center near you.
Application intended for: E39 540i from 1999 2000 2001 2002 2003 2004
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So far I have been happy with the proutcome