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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He can always install a glass pack on a single exhaust. Neighbors won't love him any more when he comes in late at night, or leaves for work early, going down the street before daybreak to go sking. Heck, maybe even you won't love him.
If he get's a fix it ticket and a fine, let him pay for his mistakes, don't bail him out.
If he get's a fix it ticket and a fine, let him pay for his mistakes, don't bail him out.
