I have a z28 muffler ordered for my 2.8 v6 (yes i know it will fit because that is what i have on there now). My question is, I ordered a high performance one. How much HP do you think I will be gaining? If I dont gain any thats fine too, it will sound a lot better than my current one.

 

Z28 Muffler??? Nothing special about that Muffler, most 3rd gen cars have one. Only gains on exhaust system is a full mandrel bent 3' catback one.

Picture of my exhaust oulets and that is not a V6 exhaust.

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