i'm planning on adding tail pipes to the truck and am considering 2.25" and 2.5" piping. i know it's a small difference, but i'm having trouble deciding which size to get.
when i had the 4.3, i was running a single 3" pipe from the y-pipe to a single in, dual out MellowTone muffler (similar to a FlowMaster50HD) and no exit pipes.
now that i've swapped in the 5.3, i don't know what it is - shorter stroke/smaller cylinders, more cylinders making more constant flow, or what - but it's just a lot smoother and a little quieter (unless i'm getting on it). now i want to add tail pipes to beef it up a little (and get a little more low-end torque back). the muffler has dual 2.5" outs, and i want a little more growl than a hollow-mustangy-sounding gurgle. i'll probably use some 3.5"x15-18" tips to deepen it up a little, but i just want y'all's opinions on which to go with.
just some application notes about the truck:
-it's my DD, so i don't need to lose any more fuel economy (if that would even be a factor)
-engine is a stock 5.3 with a tune & an up-and-coming CAI
-using stock manifolds, cats, & y-pipe with 3" pipe to the muffler
-it's 4x4 (with a 265/75-16 spare, soon to be a 285/75-16 when i get a new set of tires)
-i plan on a mild cam swap on down the road: something to bump the low & mid range
-since it ain't gonna be a HP monster, the flow differences between the different sizes is negligible, right?
thanks for the help
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