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Now I've move up to a 2010. I drove it stock for about a month prior to spartan tuning in order to get baseline temps.
Two things I notice immediately, its way better on fuel and the torque converter locks in 4th gear around 60 km/hr before shifting into locked 5th about 73km/hr.

When I spartan tuned, I went straight to the 250 early lockup. I do not really care for how the trans shifts now. The converter does not lock until nearly 80 km/hr and never locks in 4th unless I have tow haul on.

Why does it lock so late?
Are there any tunes that will lock the converter in 4th earlier?

It is a 2010 cc long box single rear wheel lariat with 3.55 rear end.

I can also say that I'm not a big fan of the 3.55's when towing. Empty on the hwy they are pretty good tho.

Thanks
 

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I can also say that I'm not a big fan of the 3.55's when towing. Empty on the hwy they are pretty good tho.

Thanks
3.55's, Which is why it does so well on mileage. I don't know much about the team's tuning, but I'm sure several years ago are well be here soon enough.

In the meantime, how you looking the new truck?

Sent from my LTEVO using AutoGuide App.
 
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