On my 05 I gained 3mpg by putting in a k&n drop in filter and ditching
the rear exhaust resonator. Tonneau cover helped too, but not by much.
One other aspect is gas... I get better milage out of 89 rather than 87.
The 4.7's have a slightly higher compression rate than the older
magnums, so ya gotta give it a little more octane to get the best
performance.
As far as real HP Performance.... not worth it right now! Just try to
do a burnout while stopped, you'll get my drift!
Gary Hedlin
2005 SLT 4.7 5spd
1998 Sport 3.9
www.garyhedlin.com
rwerning@wi.rr.com wrote:
> Greetings all, I'm new to the DML list - been lurking for a couple weeks, time
> to ask a question of you.
>
> I recently traded in my 98 Dak for an 05 (Mineral Grey SLT, quad cab, 4.7l v8,
> 5spd Auto) - yes, I know I'm in the minority, but I love the look of the 05's,
> the body style and retro gauge look reminds me of the first vehicle I bought
> back in '76 - a 72 Dodge short bed (360, 30-over 9.5:1 pistons, Offenhause dual
> port intake, carter 650, purple shaft cam, 3600 stall converter, damn that
> thing screamed). But I digress...
>
> Anyway, I've been working on the improvements I want for my '05 - spray in
> bedliner, tonnaue cover, side step rails, etc. The next area I want to focus
> on is performance and/or gas mileage. While I'm pleased with the snap of the
> 4.7L, there's always room for improvement - right? Plus, even at best with the
> day to day driving I do I'm only able to get around 15.5 mpg (17.5 if I have a
> long freeway drive). Lots of start/stop on my daily drive, plus living in SE
> Wisconsin, we're victims of having to use reformulated gas .. 10% ethanol.
> Gotta love the reform gas.. lowers gas mileage (fact), ruins your fuel
> injectors (fact), increases gas prices - and basically does nothing to improve
> the air quality. And don't get me started on the fact that Wisconsin has the
> highest gas tax in the country. Bitter? Maybe, just a bit - but again, I
> digress..
>
> Anyway - looking for mods that will help performance and/or mpg, ones that are
> reasonable in cost and won't void my factory warranty. Any suggestions you
> might have would be greatly appreciated.
>
> - RJ
This archive was generated by hypermail 2b29 : Fri Apr 01 2005 - 00:13:22 EST