Different OEM "tune" on 2013 vs 2011

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11-04-2013, 06:46 PM

#11

isthatahemi

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Quote:

Originally Posted by papa tiger

Run E85 in in UR 3.7 when the temps go way back up. Let it learn some more use tow/haul. U will discover it has 2 stages of passing, one where it doesn't shift down so hard when U feather the throttle naturally, it will do 4th or 3rd. U get the same results if UR not quite so quick. U pull around the car ahead quite nicely.

2 stages of passing eh? It does any of a dozen or so different things depending on how hard I hit the gas. Same as my 2011, except the trans downshifts quicker, with one exception, it NEVER lingers in 5th gear unlocked after the transmission warms up. Even if I deliberately give it just enough to not kick down, it still doesn't accelerate like the 2011.

I've also now noticed it coasts a lot further, also weird.

Also, it won't be warm here till May, and no way am I ever putting E85 in, ever. I plan on treating this truck the same way as my last; put gas on, use it for what I need, and enjoy 7000rpms every time I get in it!

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