Using your aFe BladeRunner hot side charge pipe is easy. First, refer to the included installation instructions. The pipe is a direct fit for your 2015 - 2021 Subaru WRX, so no modifications are required. Just remove the old, restrictive plastic intercooler tube and install the new charge pipe in its place. Make sure all the connections are tight using the provided premium stainless - steel spring - loaded T - bolt clamps and 5 - ply silicone couplings. For maintenance, regularly check the clamps to ensure they are still tight and there are no signs of leaks. If the powder - coated textured black finish gets dirty, you can clean it with a mild soap and water solution. Avoid using abrasive cleaners that could damage the finish. Also, keep an eye on the 1/8' NPT port if you've connected any sensors or a water methanol injection system. Make sure everything is working properly and there are no blockages.