lars,

there are 4 options:

you can either fit the DIY kit to your own ecu that will use your existing chip.

you can send your ecu to msd and they fit the kit and use your existing chip.

you can fit the msd wasted spark chip to your own ecu.

you can send your ecu to msd and they fit the new wasyted spark chip.


the 1st 2 options allow you use the existing rev counter as kit includes a rev counter driver. with the water spark chip only - you will need to fit a rs2K rev counter or aftermarket one so that your rev counter works.