exhaust

[importedaze300]

looking to get mbrp exhaust but undecided to get 4 or 5 inch i know the bigger pipe the lower egts and the lower back pressure i am just more so curious of the sound difference i would also like to do the muffler delete

[blue99stroker]

no power or egt difference between 4 and 5" on a lightly modified 7.3.
5" exhaust is deeper sounding than 4"
i only have 4" straight pipe but i think it sounds good.