Putting my car on a diet in this BRZ Sparco seat install video.
One of the most cost effective ways to save weight in any performance car, is to replace the stock seats with lighter weight options. For my BRZ, I have chosen Sparco EVO race seats. These seats save roughly 15lbs over the stock seat, for a total savings of 30lbs when replacing both seats. The BRZ Sparco seat install process is pretty straight forward. However, you have to be careful with the various airbag and seat plugs. Not only do you save a good amount of weight, the race seats also hold you in place much better than the stock seats. This is invaluable in high performance racing like autocross!