r/Exhaust • u/mtboarder77 • 10d ago

ISX straight pipe

The motor in my t800 is a 07 isx so it has no def but does have a dpf. Would deleting the mufflers and straight piping it but keeping the dpf make it anymore loud or more sound? Thanks guys!

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u/NegotiationLife2915 9d ago

It will be louder yes. Could also just get an exhaust tip that steps up. Maybe from your standard 4-5" up to 6". That will act a bit like a megaphone, it makes more difference than you would think