I’m looking at getting a Vadder DC HX. I’m pretty new to FI cars and to be honest the LS platform, I noticed that people tend to run chillers or small tanks with coolant or water wetter. Is that a required thing? Also along with it what is the pump option for? I was looking at spending around $8-900 for this HX and wanted to know if I needed anything or if I could just replace the stock unit.