Enlarging charge pipes for your turbocharged engine must be a detailed and accurate process. Think about it. It's not like companies make a charge pipe kit that is well-designed, well-documented, direct-fit and requires no modification to, let's say, a twin-turbocharged LS1 V8 engine fitting 1995-1998 Nissan 240SX's. You are going to need a fabricator for that, a very good one. It will be a one-off kit specifically for the car brought into the shop, not able to be mass produced due to the unique setup.
You can't design good intercooler piping that fits a particular application for wide-scale production willy-nilly. Without the use of the proper tools, time, and R&D, the resulting product will be met with negative feedback from the surrounding automotive community. With the overall tight engine bay clearances of this 2016+ Honda Civic 1.5L Turbo, working around the space to design piping that will fit with a larger diameter than stock is a priority. Even slight miscalculations
