bansh-eman

Ok so I am thinking about possibly buying a Smarty Jr. I don't care about getting extra power, I want it for the extra MPG and tire size correction.

For those of you that have the SMarty Jr, do you know if it corrects only the ABS, or does it also fix your speedo, shift points, and ABS for the corrected tire size?

Also how much miles did you gain once programmed?

.boB

It will fix the speedo. I don't think it changed the shift points. If it did, I didn't notice it.

I gained about 2-3mpg. These trucks (at least, mine is) are very sensative to speed. At 50mph I get 22-23mpg. At 75mph, I get 18-19mpg.

bansh-eman

What setting do you run yours on?

WhiteMule

Speedo and shift points are where they should be. Hard for me to tell the exact MPG gain as I sometimes have different trailers/loads behind it. I would say the gain was on avg.1.0-2.0 MPG depending on load etc.

I am running ver 5.10B on SW2 and all defaults. I will try the other SW's again with this version, but with 5.08 my truck got better mileage on SW2 than SW3. A lot of people say that theirs gets better MPG on SW3. Point of it is to try the different SW's and see what works best for your driving style and YOUR truck.

bansh-eman

I don't really want to put extra power to it if I don't have to. I want everything drive trane wise to stay stock and not have issues.

As for the shift point, did the Smarty actually change them? I sent MADS an email but with them being a different time then us it will tak a little bit to get back with me.

WhiteMule

I think it did but it was not much of a mph difference on the shift points, IIRC. The problem for me with this question is that I changed gear ratios about the same time or just slighty before I got the smarty.

Even SW1 has more power than stock. It just does this with timing and not adding extra fuel. Drivetrain issues will depend on you and your right foot and your regular maintenance regardless if the truck is stock or has a programmer.

wiskeyVI

It will not change the shift points.
The extra power is what gives you the mpg gain.
With this, comes the responsiveness that really can save the butocks on the road.
Smarty Jr is great for the hiway mileage.

bansh-eman

So if it does not change the shift point, what are you guys using (is anything) to bring your shift points back to stock after installing oversized tires?

Lost Lake

Nothing. If you put on 5% bigger tires, you may shift at 45 instead of 43. With that Smarty jr, you will be grinning so much you won't even be able to see the speedo.... your eyes will be all scrunched up just smilin'

bansh-eman

Lost,

I am not worried about the shift points for the mph as much as the RPM's I know that if you start moving your RPM's higher becasue of the bigger tires your going to loose mpg. So if there is a way to bring the shift points back down it should help save even more mpg.

.boB

Shift points are determined by a number of things, RPM's being just one of them. Lt the computer figure it out, and you'll be fine.

Most of the time I run economy mode, with the timing slightly advanced. It runs good, and gets slightly better mileage than the towing selection

The big differance is the PoD. I generally run that on 60. Driving in the mountains and around town, that does increase mileage. During steady cruise on the highway, PoD setting doesn't matter much.

With the economy mode and PoD turned down, the engie produces noticably less power. I tried running it at 50. But felt like such a slug I cound't stand it. So I bumped it back to 60. Less power puts less strain on the rest of the drive line. I really don't 500+ ft/lb's to get to work in the morning.

bansh-eman

Yea I got some reading to do on it, because I just decided that I may want one. If the Smarty plugs in to update your ECM how does the POD features work to chance them on the fly?

Lost Lake

Maybe I don't understand physics, but I cannot figure out why some people are afraid of having too much power.

If a truck requires 130 horsepower and 200 ft/lbs of torque to move it from a dead stop to 60 mph in 20 seconds, then what does it matter if said truck has 2 trillion horsepower and 10 gazillion ft/lbs of torque? You use what you use. There's a long skinny pedal on the floor to control how much power you use.

Now adding a Smarty will give you more available power but you don't have to use it. I don't use mine. I don't smoke the tires leaving lights, run the engine to redline all the time. If you drive like that, then you should NOT get a Smarty without upgrading the transmission.

thenrie

Well, I think this was about fuel mileage. A truck with 2 trillion hp and 10 gazillion ft/lbs of torque will use more fuel at idle at a stop light than a truck with 130 horsepower and 200 ft/lbs of torque will use at full throttle in top gear. Then again, the little truck will probably use more fuel trying to tow a freight train than the big one...since we're using extreme examples.

Under most circumstances more hp requires more fuel. What we're working with here, though, is tuning for more efficient fuel usage, which may produce more hp as a side effect. It's a win-win thing, although it costs money to do it. It is mostly a matter of making more efficient use of what is happening in the engine anyway.

Problem is, that almost always seems to involve defeating the federally mandated smog stuff, and if you have to pass emissions inspections, it can get your tail in a crack, because it is illegal to defeat or alter those systems and you may not be able to license your truck. That mostly affects later trucks, though.

whitebuffalo

in order to change the POD setting on the fly, you have to leave the smarty plugged in and crank it up or down. (or if theres another way, i havent figured it out yet )

fwiw, i gained a solid 1-2 mpg. i average 19 unloaded, speedo GPS verified/corrected.

i used the POD function for a while, but wasnt seeing much gain, so i leave POD on full power now. i run software 1 (economy) with the most aggressive timing.