Breaking in---in stages?

[Sregorb]

Ok, hope there are some truck software guru's out there.....

Have the new truck and am breaking it in nicely now. I've heard that there are 'stages' during the first 12k miles that adjust power, mileage, torque converter, etc. etc.

I just went over 2k and there appeared to be a small increase in power as taking the usual left turn on the way home from work and the back end lit up the tires nicely (after the turbo spooled up and still in turn, mind you). Big grin.

Now I still can't light 'em up from standstill going straight, but now wondering if that's going to change?

Also, trany seems to slip in 2+3 more than I'd care for (especially when downshifting/passing). I'm going to be patient until after break in to pass judgement but is it going to get better, more solid shifts or is that not affected by the 'stages' software?



Brian

 

[LSMITH]

You are likely never going to be able to light the tires in a straight line on clean dry pavement with a stock truck. I don't have any proof but I am convinced that there is no break in software changes. What you start with is what you have, the engine just frees up as it breaks in. I think that you might see as much as 20% gain in overall power as it breaks in. As far as I am aware the 1-3 shifts are hydraulicly controlled, the computer could not change them if it wanted to. The only wires that go into the transmission are the nuetral switch and TCC solenoid wires. What your transmission is doing is what it will continue to do until you change parts or settings in the hydraulics.



The ISB puts out as much power as it thinks you need based on conditions at the time, if conditions are not right for full power it will not give it to you. The ECM manages power and torque output constantly. A 12V will give you all it has when you tell it to, an ISB sees a request and not an order. Hope this helps clear the situation up a little.

 

[PKozlowski]

Just do like the book says,

put a load on it and go!

don't baby it !