Dinan Stage 3 Performance Engine Software for BMW 645Ci E63 Coupe 645Ci E64 Convertible

Special Note: Recommended for use with High Flow Intake, Throttle Body and Exhaust.
Product Description
The software safely raises the rev-limiter by 250 rpm, enabling you to carry more road speed in each gear, as well as optimize shift points. The top speed governor has been removed, enabling the cars to reach their natural top speed. Revised EML tuning provides improved drivability by speeding up throttle response.

Stage 3 Performance Engine Software has been tuned specifically for use with Dinan's High Flow Intake and Throttle Body, optimizing power output as well as improving drivabiltiy. 


  • 2004-2005  645Ci E63 Coupe 
  • 2004-2005  645Ci E64 Convertible 
Product Specifications
Labor Hours/Installation Hours 0.50
Emission Status 50 State Emissions Legal
Included Notes Included Item Details