Bully Dog Triple Dog GT Gas Tuner Gauge for my 370z
Installation was the easiest part. Took me about 20 minutes or so to read through the manual and an additional 20 for proper install. The hardest part is understanding EVERYTHING that this unit does. Be sure to read the manual thoroughly prior to install. It's roughly 80 pages but a lot of pictures and how to diagrams. Totally worth the value. My Z zips and is responsive as its ever been after I tuned it to the Performance setting.