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Description
Smarty Jr Tuner J-06 By MADS Electronics 03-07 Dodge 5.9L CumminsThis is THE best programmer on the market for the 03 07 5. 9L Cummins. Every single truck that we have loaded a Smarty Jr. in to test drive it has driven away owning one, they are simply awesome! Sure, the Jr. model doesn't have as many power levels as the Sr. version. But if you're like most and are going to maybe add an upgraded exhaust, cold air intake, and possibly a few other upgrades, the Jr. version is for you. Simply put, its easy to use, and
This is THE best programmer on the market for the 03-07 5.9L Cummins. Every single truck that we have loaded a Smarty Jr. in to test drive it has driven away owning one, they are simply awesome! Sure, the Jr. model doesn't have as many power levels as the Sr. version. But if you're like most and are going to maybe add an upgraded exhaust, cold air intake, and possibly a few other upgrades, the Jr. version is for you. Simply put, its easy to use, and it works. You can expect a very noticeable increase in power and a bump in fuel economy once some of the fun wears off.This product is geared toward the customer who wants reliable and safe power for both the engine and the transmission combined with good fuel mileage. In fact, the main concern during the development of the performance software have been lowest EGT's and lowest smoke levels possible.
Even when used at the highest horsepower level, typical exhaust gas temperatures are on average 200°F cooler than with stock software! Under normal driving conditions Smarty junior can be used without the need for gauges, even towing up to GCWR!
One of the biggest reasons we choose Smarty, isn't because of the overall power gains, but really WHERE the power comes in at. While many other programmers deliver the same overall power, it comes down to what Smarty calls their CaTCHER software. This software brings the power right off of idle so you can experience the power increase throughout the entire RPM range, not just at wide open throttle.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.7 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 3
Way too narrow
Size: 9.5 Wide, Color: Burgundy Polished Full Grain
I ordered a wide in this shoe, but it was still way too narrow. I had to return them. Otherwise, it looked like a nice quality shoe.
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Reviewed in the United States on February 12, 2026
★★★★★ 5
I usually wear 11.5's, but I buy 1/2 size smaller to accommodate for stretch. Leather relaxes.
Size: 11, Color: Burgundy Polished Full Grain
5 STARS: These shoes are awesome. I keep coming back for more. I have major foot problems, have tried all kinds of shoes, orthotics, and inserts... but believe it or not, these shoes work better than any of that stuff. I wear them daily. I buy lots of them, for home, for church, and I'm getting my first pair of J&M boots today, for winters in Indiana... Brrrr
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Reviewed in the United States on December 18, 2025
★★★★★ 5
Great price great shoe
Size: 12, Color: Burgundy Polished Full Grain
Excellent shoe. Tried the Sebago penny loafer and the sizing was ridiculous. These J and M are sized perfectly. I’ve had them before and they wear like iron. Very comfortable right out of the box.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
One of the best shoes
Size: 9.5, Color: Black Polished Full Grain
Outstanding. Fashionable, most comfortable and good construction. No sines of use after quite some time. Highly recommended.
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Reviewed in the United States on March 21, 2026
★★★★★ 4
Quality shoe but with a slight squeak.
Size: 10 Wide, Color: Burgundy Polished Full Grain
Nice shoes with the classic Penny Loafer design. Fit was better than another brand I tried. Only reason not 5 starts is disappointment due to a slight squeak at times when walking.
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Reviewed in the United States on August 11, 2025