For most folks a Cobra FI2000R will do all they want. If you want that last 2-3 hp and don't mind spending time and money dyno tuning it, then go for the PC3. If you want something simple to adjust that does the job, go for the Cobra. I use it and it works great.
If you plan on running nitrous or adding a turbo, then your only choice is something like the PC3 that can run multiple maps.
If you plan on running nitrous or adding a turbo, then your only choice is something like the PC3 that can run multiple maps.