IMO the programmers are a waste of money. QSC, DDP, and Duraclutch are a couple of proven clutch kits for our Rangers, I use the QSC setup. Really woke up my machine as far as low end performance, both in acceleration and in initial engagement.
I sell them, if you are asphalt most of the time, don't buy one no gains.I have a 2015 Ranger 900xp,I trail ride and ride a lot on the asphalt. What is the best clutch kit to go with? Also wondering about a fuel controller? I've used Power Commanders on my bikes, no idea about the Polaris.