hi, i have a 89 turbo 2. this is my first standalone ems. what do you guys think is my best bet for a good one..i read alot of posts. the haltech looks like its better to tune and hook up to a rx7. i was wondering if a megasquirt would work just as good. hows microtech and other brands? do i have to upgrade my ignition with any of these... i'll be running a halfbridge with a mp t70 turbo, some 1000cc and 1600cc inj. thanks