2004 GTO - Flowmaster Exhaust
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2004 Pontiac GTO Flowmaster American Thunder Cat-back LS1by ls1gtobabyFeatured Video7,075 views- 1:14
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2004 Pontiac GTO - stock exhaustby jcash004,238 views
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1970 GTO with Flowmaster American Thunder Exhaustby 4wheeler1416,463 views
I find LM1 and Spintech to be the loudest on stock manifolds and mids. Its always personal preference though can't go wrong with the quality and sound of Flowmaster even once the mids and headers are upgraded I find this to be the smoothest sounding.
afabh 5 months ago
yeah, that seams quieter than stock.
panzr110 5 months ago
That doesn't sound any better than stock !!!
fatuglybastard98 1 year ago
i have an 04' gto with AEM intake, loudmouth headers and loudmouth catback exhaust. Sounds waaaay meaner then that. Is that automatic?
Ensilvanation 2 years ago
if you got some LT headers it would sound sick dude
HaLoSiCk 2 years ago
I got Flows on my Stang and they're far from weak =D but I'm not a big fan of the American thunder series.
ryan62586 2 years ago
you may want to look into cutting the resonator it appears ls1 naturally doesnt sound as evil as an ls2
tingokuman 2 years ago
sounds like a stock exhaust
jiubi24 2 years ago 2
flowmaster is weakkkkkkkkkkk
BizzyBone4Life 2 years ago
cant hear it
carguy12345678910 2 years ago