I have a 2003 Chevy Silverado 5.3L with dual straight pipes and was wandering how...

[Sawyer Betts]

...to meake them louder for fre? I dont know the make of my pipes but their straight duals. any help thanks.

 

[willey2000silverado]

are they actual duals? do you still have your catalytic converters on or glass packs? if so take everything off so its ONLY pipe all the way back and it should be more than loud enough.