I have gived Simjet 4 cahnces now (4 new ECU) and my engine still does not run good. Obviously their quality vary a lot from engine to engine. If I was happy with my Simjet ECU I would not be asking for advise on better options
Maybe the support is better in America as in Europe. Here it is impossible to get any help, both from the factory or the distributor which changes all the time. Every time I call it is a new distributor.