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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The only reason I would say no is because the system is not a true dual system. he will only be wasting money on something that does nothing. I would go with a nice cat back system that flows and sounds good. I always laugh when I see dual exhaust on a truck that is only a single exhaust.
