If I switch to an Evo X intercooler for my 2010 ralliart do I need an Evo uicp and licp or will it end up being a custom set-up or a kit i need to get?

 

You can mix and match any evo x/ralliart aftermarket intercooler pipes that you want with the evo x intercooler. Or if you want to keep the stock ralliart pipes, you might just need to get new couplers to make them fit.

When I first upgraded mine, I first got an uicp then later an evo x intercooler, then eventually a licp.

 

You can use stock pipes but you will need new couplers. If you can I would get some hard pipes though.