wanna b lower
+1y
Yea i did the flowmaster duel cat back on my 4.0 and i noticed a little more power, besides that just what everyone else was saying, headers, intake, and maybe plugs and wires but i havent found any of those around yet. There isnt a supercharger for the 4.0?? I thought i found one on ebay a while ago but maybe it was for a diff year.