Dinan Stage 3 Performance Engine Software (97-98) for BMW 528i & Sport Wagon E39 1997-1998

"For use with High Flow Throttle Body. Optimizes performance and drivability.

Dinan software is not available for purchase on-line as it must be downloaded by an Authorized Dinan Dealer using specialized equipment. Contact your local Dinan Authorized Dealer directly for the purchase and installation of Dinan software."