pwall Posted March 14, 2007 Posted March 14, 2007 I had the plugs and wires changed today in my truck (getting it ready for towing next week). Anyways, the truck seems much quieter when driving down the highway. I'm used to the sound of the Gibson cat-back, and I swear it's now quieter. Does that sound possible ? (no puns on words....well ok, it was).
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