yea my 1984 Z28 camaro pops alike when i let off the pedal or if um coming to a stop,, i also have striaght pipes.. i cut the cat and mufflers off and ran totwo 4inch tips in the back and it soundspretty good..its not too loud and its not to quiet.. it has a crispruffsound...... but what i dont really like about it, it is when i first start it up in the morning it take only two seconds,, but after i get to drving it around real good, and turn it off. its kind of hard to start. is that bad?? oh its a 350 with edlebrock parts