5.3 LS Engine differences?

Me and my buddy both have a 2008 Impala SS with the 5.3 LS engine. When starting them up, his has a deeper cranking sound than mine does. Both still have the factory oem starters. Mine has no rear mufflers but his has 2 aftermarket mufflers. Both engine are still stock, just curious why do they sound different cranking over. 

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  • arther
    Lv 4
    1 month ago

    you said it yourself the exhausts are different does yours drone at speed ?

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