I have a Flowmaster cat back system on my v6 Dakota. This system comes with a
2.5" inlet muffler (50 Series SUV, no adapter needed) and 3" outlet with a
single 3" tailpipe. There is no low end loss and a noticable improvement (not
big but noticable) from 3000 rpm up.
The further you get away from the engine the less impact the exhaust has on
power output. I do not believe that the 3" tailpipe made any difference, it was
the muffler. The stock muffler even though it is 2.5" in/out it necks down to
less than 2" inside. I would likely have gotten the same results if I just cut
out the stock muffler and replaced it with a 2.5" in/out.
If you are considering a cat back system make your purchase based on sound
looks and/or price and do not worry about the size of the pipes behind the
muffler.
IMHO, the Flowmaster Force II system is the biggest bargin of all the cat back
systems. I got it from Jegs for $160 and it was less than a hour to install
with no fussing with adapters or the need to weld any pipes together.
Dave Clement
99 SLT+ CC 4x4
In article <cln30n$gs0$1@bent.twistedbits.net>, chris92@insightbb.com ("Chris
Reck") writes:
>
>
> So you're saying that the mods I have won't compensate for the low-end loss?
> How much loss are we talking? I've been pretty "modded" for the most part
> in the engine to account for any possible loss.. I'm also planning on
> getting the SuperChips tuner as soon as taxes come in (and removing the Jet
> Chip).
>
> My brother has the same exhaust and air filter on his Jeep Cherokee inline 6
> and has experienced no loss of power. In fact he gained some. Granted it's
> a different vehicle, but I think the performance is about the same.
>
> What does anyone else think about having a 3" single-exit exhaust on a V6?
>
> --
> Chris Reck
> Bloomington, IL
>
>
> ""Mike Sykes"" <mikesykes@cox.net> wrote in message
> news:001201c4bbc5$deffbd30$53c20d44@SERVER...
> >
> >>>I could use some help determining what I need for my truck. I've got
> >>>87,000
> > miles so I was looking at getting a high-flow cat (since it's rattling)
> > and
> > a Gibson 3" single out exhaust<<
> >
> > I can tell ya' from experience that 3" exhaust on a V6 is too big and will
> > really hurt your output. I know a cat-back is easier to install and stuff,
> > but 2.5" is optimum and there are very few 2.5" cat-backs out there. My
> > advice is to peice together a 2.5" exhaust using a 2.5" hi-flow cat and a
> > 2.5" single inlet muffler. At this point you could go with a dual outlet
> > muffler and have the pipes bent to you liking. You'll end up saving money
> > in
> > the long run and get the exhaust exactly like you want it.
> > I can't stress it enough, 3" is too big for a V6 that's not built, blown
> > or
> > juiced.
> >
> > -miggity
> > Newport News VA
> > 2000 FR R/T CC
> >
> > "...someone set up us the bomb...."
> >
> >
>
>
This archive was generated by hypermail 2b29 : Mon Nov 01 2004 - 10:47:43 EST