Hi LF! My name is Chris. I'm from Colorado and the happy owner of a new 2018 IS350 F-Sport.

I'm a car enthusiast and a Superbike rider and racer. I love to upgrade vehicles and this IS350 will be no exception!

I'm wondering what "go-to" performance upgrades you folks recommend? Specifically, since this is a brand new vehicle and still under warranty, I'm curious about options that improve performance (acceleration and/or handling) without voiding the warranty, though, of course, long-term all options are on the table.

Also, I came across trdparts[.]jp - any feedback on this site? Is it legitimate?

Best,

Chris