Some help /Backfiring thru exhaust

[bobbynj66]

Ok my first post and hopefully can get some help.This is the story I just bought this car from some jackass and have no idea what into it.The car runs great at a idle and when you go down the road and hold a staedy speed no probs but when you go up a hill or stomp on the fuel you get a backfire and popping.The car was sittin I dumped new gas in it and the exhaust is blown wide open the muffler is acctually split in half.The motor was built by Cotton's and has a aftermarket intercooler on it.Any help will be appreciated.

 

[SloGN]

please check to see if the cam sensor has been installed 180 out. Also what is the MAF grams/sec @ WOT when this occurs does it have any knock? could be a few things happening causing those issues.

 

[bobbynj66]

Wow thats all Greek to me I appreciate the response I guess I had better get it to a shop near me.