Forum Discussion

IT_Burnout's avatar
IT_Burnout
Explorer
May 26, 2017

Smarty Jr tuner, related

On the fence on a tuner, here. We are talking a totally stock 2008, 2500 Ram with a 6.7 Cummins with 80K miles on it. DW and I just retied about 6 months ago, easing into plan to spend most of the summer months traveling.

The tuner I am thinking about is the Smarty Jr, and I would probably run the 40 or 70 hp bump. I have no plan on racing and beating on this truck. But a little more power towing on a long grade might be nice. If I could pick up any mileage gain that would be an added bonus, but have no expectation on that front.

The truck has the 68RFE transmission, and is only used as a tow vehicle. Smarty says the tuner is torque limiting to protect the transmission. I also have in the back of my mind trading up to a new 3500 dually with a higher torque numbers maybe in the next year or 2. So I could be fine with leaving things just as is, the towing experience I have now sure isn’t bad. DW say leave it as is, and just get a new truck (and maybe new 5th wheel) when we are sure we will spend enough time doing this to get our $$$ worth of enjoyed out of it.

I am wondering if some folks on here are running this tuner, what kind of experience they could share. With conservative driving can I expect this thing won’t cause additional maintenance (EGR and transmission) issues? Also not interested in it, if it causes excessive smoke.

Your kindly comments pro or con would be appreciated.
Bob
  • The tuners work on Diesels very well, or did. I'm not familiar with units with all the emissions hdwe.
    We had a 2002 F350 Dualie Diesel with a tuner bought from Dealer. I caan't pull up the nae of the tuner right now.
    It had three settings, tow haul, and two performance settings. I left it on the tow setting. It improved power tremendously and mileage. Ran like a race car when empty.
    Diesels like fuel compression and timing. They have reduced compression and fuel for emissions. Power is n so they upped size just a bit, which really didn't amount to much.
    A Tuner should increase timing and fuel. Timing will help compensate for compression somewhat also.
    The more you feed a diesel the greater the output and efficiency or mileage but you can burn the pistons up if too hot. They can swallow all the air you can feed them. They don't have throttle bodies.
    I don't remember why they tune to certain levels when the engines can put out more except emissions.
    If I can find an 06 back Cumminsin a Dodge or Ford o4 back 7.4 International, in the Ford I'll will buy it. The older Duramax, do good also.
    Performance or power and mileage come last in the EPA's plans for emissions.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,190 PostsLatest Activity: Jan 19, 2025