95 jetta help please

i wnt to start my car yesterday and it did not start and something under the hood exploded! it was a black encasement with some foan material inside with 2 wide hoses entering and a small nipple on the other end
i saw a pic of it on another site and it said it was a baffle/mufler for the idle stablizer??? is this correct and what is the name of this part
any help thnks
Becky