alright whenever ive drove around for 30 mins to an hour and i park the truck and turn it off it sits there and "pops and sizzles" and makes all kinds of weird noises

i got under the truck and listened and it really sounds like the noise is coming from inside the cats..mainly the 2nd set

i also checked to see if there was any liquid falling on the exaust pipes thinking that that might be the cause and couldnt find any

im just not sure if its supposed to do that or what

but if theyre bad i think i might here some hi flows calling my name

 

Possibly, get the hi-flows then.

 

those noises are normal after you shut the truck off.

 

Yeah what built said, after you shut it off, its the engine cooling, so it pops and cackles.

 

psh darn haha

maybe after i see what the scrap yard will give me for my old cats i might still decide to get the hiflows