I'm not sure that replacing the cat will get you any better mileage,
though you may get more power especially if you've got other mods. Replacing
the stock cat with a high-flow unit WILL make the truck louder. A good
catback would probably help mileage, but then you will also have a louder
exhaust. The combination is even louder. I've got a 3" dynomax cat and a 3"
50-series flowmaster on my 360, and it sounds awesome!... but its definitely
"loud". :-)
Doug Myers
-------------
'99 Dakota RC/SB 5.9L/5-speed/3.92SG
K&N Gen II FIPK, Comp Cams '604 cam, Progear timing chain, MP 2-bbl MPI, MP
R/T heads, Hughes' roller rockers, MP polished aluminum valve covers, ASP
crank pulley, MP Headers, 3" Dynomax cat, 3" Flowmaster, Accel Supercoil,
Magnecor KV-85 8.5mm Race Wires, Melling HV oil pump, Centerforce Dual
Friction Clutch
""Brandon"" <ih8ac@gmx.net> wrote in message
news:000c01c16c7f$562cfd80$90a16cc6@dragline...
> I have a '98 DAK automatic 4x4 w/ the 5.2 L and about 82,000 miles on it;
I
> get around 12 city and 17 highway. I'm wondering if a free flowing
> catalytic converter (like the dynomax setup
> http://www.dynomax.com/super.stm) and say a Flowmaster muffler would help
my
> mileage (it's possible that the stock setup is more restrictive and
perhaps
> even clogged with that many miles.)
>
> 1. I'm interested in reading about what exhaust mods people have done to
> Dakotas and how they have affected gas mileage.
>
> 2. I'd like to hear suggestions for mufflers and/or high flow cats. I
don't
> want something really loud, and I don't want a muffler with dual outlets
in
> the back; I like the stock passenger-side out.
>
> Thanks all!
>
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:03:29 EDT