Our standalone system sales has really declined over the years due to the better PCMs and custom tuning abilities of GM and Ford vehicles. Where such standalones really shine is for the many vehicles that have limited custom tuning software, such as Daimler Chrysler and import vehicles. Most AEM sales are for imports. However, there is a place for such standalones if additional controls are needed. such as staged injectors, boost and nitrous plus the ability to go up to 5 bar MAP sensor. Years ago when we had just ECMs (engine control modules), standalones were an easier alternative but now and in the future, due to the VCMs (vehicle control modules), these standalones can no longer completely replace the cars VCM due to the additional duties imposed on the computer such as guages, horns, heaters, AC etc. So piggybacking them to the existing VCM is required, which for many, is much more complex due to wireing.