does anyone know the pros and cons of the of the PCIII vs the techlusion tfi.....

 

I believe they are similar in that they both have buttons on them to change the amount of fuel in different RPM ranges. The PC3 however can be hooked to a computer and you can customize a fuel and ignition map for your particular setup, or install a canned map. If you have a 07 I would use a SERT and keep the O2 sensors, but that's just my opinion.