What mods have y’all added that made the biggest difference.

What’s your favorite mod? I’m looking to add more to my machine (2017 outlander xmr 1000r) so far I’ve got duel exhaust and I put in a epi mudder clutch kit. Looking for suggestions, I’m waiting on hmf for a fuel tuner. I contacted them and was going to buy one but turns out that 2016 to 2017 fuel mapping is different. So I’m waiting on them to figure that out and I’ll have that. Excited to hear what you guys have to say.