I'm building my first HMT kit and I was fitting the intercooler on. My question was, I have a 3 inch CAI then the rest is mandrel bent 2.5" tubing. I heard someone say that it should be big piping before the intercooler, then smaller after since it'll be cooler condensed air... Will this raise a problem since i'm doing it visa verse?

 

its usually smaller from turbo to IC. 3" is a bit large, but it will work.