exhaust backpressure??
#11
#13
There is NO point... I repeat... NO point where a 5 inch exhaust is "nessasary" or builds more power.
End of story.
#14
ive got a 4in down pipe an 4 in mbrp, truck runs just fine with chip an intake an all that stuff. 4 in is all u need, especailly if your not planning on building ur truck to the max. if u want a deeper sound 4in down an 5 in back, but thats all its going to give u is sound. 5 may give u a little longer of a turpo spool time without the fuel an air upgrades, from what ive been told, but to answer ur question back pressure is not an issue. either or is fine just go what you like
#15
#16
I'm running 4" MBRP (duals...I like things to look balanced so I wanted two exits ) and it is plenty. A guy I know (Brian Jelich, check it out on YouTube) is pushing 992 HP in his Stroker and he was only running a 4" with a single 6" stack (before the hood stack was installed). So as CSIPSD stated, 4" is good enough.
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