How exactly does dual exhaust help a 1995 Chevy Caprice?
I would guess it is a little help since it does relieve a little
back pressure. Back in the old days when cars had true duel
exhaust, the pipes ran straight back on each side. Now, the exhuast
usually comes from a single pipe off the exhaust manifold, into the
catalytic converter at which point it either splits and goes to
separate mufflers and then out the back OR a single pipe back to
one muffler which has two outlets for the duels. At best either is
mainly for the effect and the sound. A few vehicles do have two
cats and entire systems but not Chevy cars as far as I know (except
vettes and some older trucks)................actually not true my
caprice 94 9c1 5.7 350 and everybody elses do have true dual
exhaust. only the 94, 95, and 96 caprice and impalas with 5.7 350's
have this though!