I have a total of 485 miles on my 2005 LLY, about 15 of those miles have been with the juice/attitude installed. I have never set above 3 and had set to defuel all locked shifts. I have been gettin on it a little in those 15 miles but haven't even floored it yet due to low milage. Last night the slip % came on while accelerating and occationally even when I let off the pedal. Still doing it today and noticed less% when tow/haul on. I dont feel it slipping but im still getting used to the edge. Also no check eng light coming on which it should if factory comp. detected a slip. So my question is have any of you expierenced a problem with the attitude doing this or do you think I have already jacked up my tranny?
BTW the slip % was all over the place like from 2.4 to 98.6 to 16.8 ect...

If your TC is not locked up it will display a slip %.

Well, a couple of things:

Tranny slip is very normal when you're driving it light - because when you drive 'er easy, the torque converter doesn't lock up instantly. Depending on your speed and accelerator position, it might not lock at all for periods of time.

Tow-haul definitely will lock you up more, and at that point, you should see 0.0% on the slip monitor. Now on my older LB7 unit, there is some noise in the system and I see the occasional flicker of 0.6 or 0.7% when locked.

The easy way is, set the attitude for the 4-way digital guages, and set one of them to display the current gear. When it locks, you'll see a little padlock icon show up in the corner of that readout. Then you should see the slip drop to zero or thereabouts when you lock.

It's pretty amazing how much the Alli will run around unlocked. When I have to drive like a doggone sissy because of traffic, I've seen 60%++ slip on mine when unlocked, and the drivetrain feels like a rubber band. When I get sick of that feeling, I do T/H and live with the downshift and rpms.

This is one tranny that feels more confused driving it light than driving it hard. When you finally get some wide open throttle runs and become more aggressive with it, it'll get better and better.

I don't think you've hurt it. Enjoy.

So are you saying the attitude is just showing the normal lock up process and then trans is not slipping as in "screwed up" or "broken" type of slipping.

yup .............enjoy and dont sweat it

WHEW....I do plan on tranny upgrades but not this soon. Thanx for the info, old lady would be pissed if I broke it before I got the license plates on it.

Personally I wouldn't run the attitude higher than stock untill at least the first oil change. The DMax is suppose to be broke in from the factory but I'd give it a few miles to make sure everything is run in nicely before working her hard. JMO

I agree....give 'er an oil change now and wait til 1500 mi and then start workin' 'er good.

Very sound advice. I was a little impatient and put my attitude on at 900 miles. was only able to make it about 500 more miles before i couldn't resist it anymore and started with the real hard driving on levels 3 and 4(don't play with 5 due to stock tranny). I have had no problems, so 1500 mile breakin sounds real good. Good luck.