I have pretty much made up my mind on getting the Haltech ecu. Looking on the RX-7 store I see that there are serveral options as far as harnesses go and so on. I like working on cars but I hate wiring. What do you guys think? Next I assume that I need a wideband O2 sensor is this correct? Last once I get this thing installed what's the next step? Start with a base map and many hours and start tuning away.

 

Sounds good to me. Hopefully you have a friend that has some knowledge about tuning. Or just hope you do not make a major mistake.