I have a 2008 G37s with the follow aftermarket products:
STILLEN:
Generation 3 Ultra Long Tube Dual Intake Kit

Fast Intentions:
High Flow Cats with Cat back exhaust

Engine Performance Chips:
PlugChip OBDII Plug In Chip

Would like to get an ECU flash and/or Tune on the Dyno with a recommended software. any suggestions?

Thanks,

Nick

 

You're only options for tuning are Uprev ($500-600) and ECUTek ($800-$900)

Both websites will have a list of tuners in your area.

 

What does the PlugChip OBD2 chip do??

 

Nothing, I shipped it back and headed to a Professional Dyno and ECU tune.