The MS tuning software has got better, but you're right, it still requires you to have a decent grasp of how EFI works. It's not a plug and play system and there is no documentation outlining a standard V8 install. Because the system is designed to be so universal, they don't have a lot of recommended components, therefore a guy can get overwhelmed with all the facets of the software that can be configured. The MS3Pro has solved a lot of those issues, but at like 1000 bucks, it jacks the price up to that of the other systems. The other MS units that can still be had for only a few hundred dollars, but they are more labor intensive to install. Like everything in the car hobby, if you want to save dollars you have to expect to spend hours.