glue? lol glue for what!!?? The PVC piping is not held together by glue like ppl think, and no silicone def would not hold boost LOL!!! Its a solution that fuses the plastic together, it can withstand 150 PSI without leaks and it has an ok heat rating, I have been running without a problem for a while. There is actually other ppl on here running PVC for custom setups.. It does not retain heat like metal does so the air is cooler too