Duel Exhaust
Grandson wants to install duel exhaust on his 08 GMC Sierra 5.3L engine. Any drawbacks to this or is there an upside. I've heard both. With the valve overlap and less back pressure you lose low end to...
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I totally understand the young fella wanting to do that. I would let him, only of course if he is paying for it. Is it up to you? Your only young once! I remember liking the noise myself. Now you couldn't pay me enough to listen to it. I am a grandfather of three boys. I love their young enthusiasm for what seems silly to me now. But it sure didn't seem silly to me 40 years ago.
