Performance and Accessories 2nd gen only Talk about Dodge/Cummins aftermarket products for second generation trucks here. Can include high-performance mods, or general accessories.

Smarty+current Mach3s experience

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Old 04-24-2007 | 04:36 AM
  #1  
AlpineRAM's Avatar
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From: Austria Europe
Smarty+current Mach3s experience

Since I've been running my new mach 3s with the smarty for some miles now I think I can report on my findings.
These are personal findings and may or may not be reproducible with other trucks.
On long distance runs with SW 3 of my smarty the truck is running extremely comfortable, not too aggressive fueling like on 5,7,9 where I think it's annoying to keep your right foot completely still or you go ballistic on other road users, and I get some slight troubles with the automatic tranny that won't downshift when it should. This is no problem of the transmission but a kind of mismatch between the parameters. Driving with #3 I have manageable low end grunt, manageable smoke and reasonable shift points. (I think I will readjust my tranny for approx 200 rpm higher shift points under light throttle though to avoid lugging while city driving)
With the new Mach 3s the EGT's while cruising increased a little, but under load they dropped considerably compared to the stock injectors. If I take it easy I can run the truck up to 120 mph and stay below 1150 F EGT - under WOT I'm a little too hot for my taste- especially when lugging the engine.
Last weekend I made a round trip of 950 km (590 miles)and got a fuel mileage of 18.9 mpg, (hand calculated same fueling station, same fuel isle etc) while running most of the way @ 75-80mph.Compared to what I read here this is very well for a 4WD, loaded with tools etc (approx 1000 pounds) and a camper shell.
The mileage is within the usual bandwidth for my truck, I try to keep the passing maneuvers with speeds above 100 mph to a minimum. I do use ELF bionautic TCW3 2-stroke oil at a rate of 1:200 and can say that I think that it pays for itself in fuel mileage gains in my situation. (But I don't have hard data to prove it because I did not drive enough tanks without the oil in my current configuration, reason is that the IP is making much less noise with the TCW3 and I like it for my comfort)
Coming from running an Edge Pulse with the older version of the Mach 3s I found that my fuel economy improved (coming from 15.5 mpg) , the driveability is much better (no more surging) and EGTs are that much lower that the usable power for me has definitely increased.
I would like to point your attention to the circumstance that the diesel fuel over here has an average cetane rating close to 60 so that there might be a very strong influence on the results with US diesel that has a much lower average cetane rating as far as I know.

Just some observations with the stuff I have or had and not at least intended as badmouthing or bashing other vendors, YMMV....

AlpineRAM
Old 04-24-2007 | 07:39 AM
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From: Rural Hall, NC
Nice report. Smarty #3 is a great setting for those of us with big injectors. I have similar results with the Mach 4.5 as far a mpg, average 18 mpg running 70-80 mph.
Old 04-24-2007 | 08:45 AM
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From: Texas/Oklahoma Border
Originally Posted by AlpineRAM
......Last weekend I made a round trip of 950 km (590 miles)and got a fuel mileage of 18.9 mpg, ..... I do use ...TCW3 2-stroke oil at a rate of 1:200 and can say that I think that it pays for itself in fuel mileage gains in my situation...... AlpineRAM
Good report Marcus!
I just went through as tank of ULSD fuel with TCW-3 added at 1:140 (1 Qt. per tank) and experienced the same mileage gain. Got 17.5 on a tank that included 150 miles Hwy at 75 mph, 100 miles rural traffic, and a dyno day event... plus some hard playing at the N.Texas DTR Club weekend get together. Smarty on #3 all weekend and TST Comp from #1 (hwy) to # 9.

Interesting side note... TST Comp dynoed 20 hp higher on #7 than #9?? Two others mentioned that they have experienced the same scenario.

I was previously running B20 Biodiesel but have been unhappy with the 1-1.5 mpg loss.... and the cost.
The 2-cycle oil makes the ULSD idle as smoothly as the B20, and the BTU's per gallon have to be way up! it did not do anything for my HP/TQ numbers but the added mileage was great. Going to have to test some more with the TCW-3. Also curious if straight TCW (air cooled) might not perform better since it's designed for higher cylinder head temps??

RJ
Old 04-24-2007 | 12:36 PM
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From: Cynthiana, Kentucky
Not 100% on this, but I was told that on 7 you are using every last drop of USEABLE fuel from your pump, where as 8 and 9 are actually pulling fuel from the next turn of the rotor. Great for smoke, but not for power.
Old 04-24-2007 | 08:21 PM
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From: Stockholm, Sweden
Another European here!

I have Smarty and DDP V (200 hp) installed since easter. Have been away working alot so I haven´t had the time to drive it alot.
I live in Stockholm(Capital of Sweden) and its not usual with trucks that smokes like mine so I try to not smoke so much.
I have tried different Smarty #s to learn how this new thing runs.

#1. Fuelsaver. Does smoke @ WOT before boost, but manageble. Idles like a racecam gasser though!
#2. Fuel+boost. Idles as stock. More power more smoke
#3. #2+ timing More power, easier to manage smoke. Probably due to the timing.
#5. Mild Catcher+timing. A lot more peppier, but it seems that the catcher spins the turbo a lot easier so light throttle is no smoke, but then it smokes more. Feels like this is the best setting for citydriving b/c it´s a lot easier to get into the citytempo without smoke than with the lower settings. Need to remember not to WOT in city though
The lower settings smokes less, but "earlier".

Someone else that experience this, or am I having brainhosts?

AlpineRAM... how do you adjust shiftpoints? Seems like a good Idea...
Old 04-24-2007 | 09:52 PM
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From: Rogers, Arkansas
I've noticed the same thing with my MACH 4s. Setting #3 is the one I leave it on now. Its the only way I can drive it across intersections without jerking the driveline around because the pedal is so sensitive in the first nanometer of levels 5,7,9. I still sound like an unsteady foot driving down the interstate at a steady speed. Cruise control smooths it out perfectly, but CC is for weenies!
Old 04-25-2007 | 01:44 AM
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From: Austria Europe
OBBEN- shift points can be adjusted at the valve body- http://www.dieseltrans.com/phpBB/viewtopic.php?t=68
On #5 mine would smoke in the city. on #3 it is manageable- but I shouldn't go WOT before I've got at least 8psi boost.. with the low stall of the dtt TC it will start to squeal tires when it starts smoking. So I think acceleration is pretty nice but you need to be careful not to make a nuisance of yourself by squealing tires and smoking out all other drivers.
ROWJ -I think I read that most folks with a TST and big injectors dynoed highest with SW 3 and would lose 20hp per level from there on up. I think it's mainly tha combo from what the smarty asks of the IP and the things the TST does ask from (and brute force) the IP that aren't matched on the higher levels.

AlpineRAM
Old 04-25-2007 | 11:48 AM
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From: Airdrie Canada
Which turbo you guys running with the mach 3, 4 or the big ddp's? I'm getting around 18-20mpg typical. How much smoke you guys getting with your smarty on setting #3? If I get into the throttle, I smoke everyone. Its better than the edge but the smoke doesn't clear at wot. I'm looking for a good set of sticks to run with a 35x/3b twins combo. I'm sure that using the mach 3's, there would a minimumal amount of smoke.
Old 04-25-2007 | 01:26 PM
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From: Austria Europe
I'm running a single "HX35" that has been somewhat modified by me. It's got a different exhaust housing, modded turbine wheel, different compressor wheel etc. It's still got not enough air. Smoke is very controllable, spool is OK but you should never push the go pedal hard, just roll into it then it'll spool and not smoke until WOT.
I'd like to point out that I do not use a wire tap box in addition to the smarty, so there is much less fuel involved than with those boxes-Not that I wouldn't like to have one like a TST redline but money is tight at the moment and fuel economy is important when diesel is over 5 US$/gal...

AlpineRAM

Last edited by AlpineRAM; 04-25-2007 at 04:42 PM. Reason: clearing up some stuff
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