porschefig

my 924 seems to have developed a back firing problem after being shut off, the first time it did it I was an air force base checking into the gate, i didnt know what it was, for a fraction of a second i thought a gun went off, scared the crap outta me...its really really loud off of my exhaust (no cat and a glass pack muffler)...but anyways, i think it only does it after the engine has been at a certain rpm for a long time...i.e. i had to drive on the highway to get the this base....