Some time ago I acquired an A518 Overdrive-transmission with stall convertor Lockup-function.
Before replacing this transmission inplace of the current A518 in the Dart, I decided to install a TransGo TFOD-HD2 Reprogramming Kit to improve the shift qualities of the transmission.
Pics of the transmission and TransGo TFOD-HD2 kit;
![A518 - Installing TransGo Reprogramming kit](https://www.bigblockmopar.nl/wp-content/uploads/2014/02/IMG_3127-809x607.jpg)