The new Maggie looks like it comes with a tune. I wonder if it’ll work with the lx.I installed the Harrop on mine, its extremely easy and took 2 days. Save yourself the $3k in labor! You just need some basic tools, a friend would be helpful, and a little patience. Both Maggie and Harrop designed their SC to be as DIY friendly as possible and as far as a tune really is not needed but I highly recommend it.