my lpg kit used to keep about 1 liter of mixed air and lpg in the intake and it backfired a few times and popped the intake apart, it's just using intercooler silicone hose and it felt like a good thud on the underside of the car when it went off. This has since been corrected.
I can only imagine what a loaded intercooler would do when it blew up. make lots of aluminum bits for one ;)