LMS Tune, Transmission Slips & Traction Control

[14SHOCAR]

So I have a concerning issue since I got the LMS 93 Octane tune. Ever since I got the tune, I've been noticing at WOT that the shift from first to second is REALLY hard. I was told that it will "soften up", but it also really concerns but driving into work, I punched it to get up to speed and I felt the transmission slip from 1st to 2nd gear. I'm starting to grow concerned that this tune is DESTROYING my transmission.

I did have Traction Control on, so it could be the torque converter could have detecting tire slip, and applying the power to the front wheels... but Its almost like I need to roll with my traction control off to do any sort of WOT on the car.

Anyone experience anything similar?

 

[SHOnUup]

I wasnt, then after miles I was...changed trans fluid...gone!!!

Rich

 

[SHOdded]

You could try having the shift pressure lowered, for one thing.  But if your tires are in an environment hostile to them, they may not give you the traction you need either.  You have the F1's on there now?  What temps are you seeing on a daily basis?  Tire pressures?

 

[ajpturbo]

Describe the slipping....the torque converter doesn't have anything to do with traction control....and it's not sending more power to the front...it's always there this is not a rear biased awe system....I'd ask livernois to lower the 1-2 wot shift pressure to no more than 200 psi max

 

[ajpturbo]

I wasnt, then after miles I was...changed trans fluid...gone!!!

Rich

I doubt the fluid had anything to do with helping but probably more due to the min and max learned start pressure settings for the adaptive scalars in your tune

 

[ZSHO]

Did you disconnectbthe battery,if so you must perform the battery relearn,so essentially the trans must relearn its adaptive strategy,overtime the learning process will fully update trans operation to its optimum shift feel.Z

 

[14SHOCAR]

I'll reach out the LMS to see if they can lower the transmission pressure at WOT. Normal driving, the transitions are smooth.

If I take off traction control, I don't have slipping.. does it change your answers at all? Just curious...

 

[14SHOCAR]

Did you disconnectbthe battery,if so you must perform the battery relearn,so essentially the trans must relearn its adaptive strategy,overtime the learning process will fully update trans operation to its optimum shift feel.Z

I did disconnect the battery to swap out plugs. How long does this "relearn" take. I installed the tune last week Thursday.

 

[FoMoCoSHO]

The first thing that needs to happen is reach out to LME and let them know what is up. Lots of us have been through this with both of our main beloved ecoboost tuners. I'm sure they will get you squared away in short order.

 

[ajpturbo]

I'll reach out the LMS to see if they can lower the transmission pressure at WOT. Normal driving, the transitions are smooth.

If I take off traction control, I don't have slipping.. does it change your answers at all? Just curious...

No but I'd have to feel and hear it first hand

 

[ZSHO]

Good luck and keep us updated.Z

 

[SHOnUup]

I wasnt, then after miles I was...changed trans fluid...gone!!!

Rich

I doubt the fluid had anything to do with helping but probably more due to the min and max learned start pressure settings for the adaptive scalars in your tune

Highly doubtful, unless the car learns while turned off sitting in the garage. Changed fluid, went WOT run it was gone...Flash tune and still gone. Stiffer shift with the flash, no stutter though. And the stiffer shifting after this fluid change and flash was much less harsh than prior flashes.



Rich

 

[SHOdded]

That fluid you pulled out was looking unexpectedly nasty too, Rich!

 

[14SHOCAR]

I wasnt, then after miles I was...changed trans fluid...gone!!!

Rich

I doubt the fluid had anything to do with helping but probably more due to the min and max learned start pressure settings for the adaptive scalars in your tune

Highly doubtful, unless the car learns while turned off sitting in the garage. Changed fluid, went WOT run it was gone...Flash tune and still gone. Stiffer shift with the flash, no stutter though. And the stiffer shifting after this fluid change and flash was much less harsh than prior flashes.

Rich

How many miles did you have on your SHO? Mine only has about 26,700

 

[SHOnUup]

48k...30 k should be changed I say.

Will finally be sending out my oil samples soon. Got a trans sample last week and was going to get one from the PTU again but Ford "couldnt" change. Maybe the test samples can shed some light on it.

The fluid was quite dark. Might be a worthwhile 15 minutes to let a little trans fluid out and check it's color.

Rich

 

[ajpturbo]

I guess if ur fluid resembled dog ****...I didn't think ur fluid could be that bad on an 11'....some people never change trane fluid...I think the shudder problem can show itself intermittently with high pressures...some cars may tolerate it better than others...and it seems to handle shift high shift pressures of over 220 psi in above 2nd gear Nicely.not sure why tho

 

[SHOnUup]

I guess if ur fluid resembled dog ****...I didn't think ur fluid could be that bad on an 11'....some people never change trane fluid...I think the shudder problem can show itself intermittently with high pressures...some cars may tolerate it better than others...and it seems to handle shift high shift pressures of over 220 psi in above 2nd gear Nicely.not sure why tho

Exactly...so I'm sort of suggesting maintenance before tune adjustments. I feel with adjusting the tune you may just be masking an underlying issue.

I'd really like if someone with the stutter would try this before getting an adjustment made. My single experience is just not enough to confirm this.

Rich

 

[BiGMaC]

I guess if ur fluid resembled dog ****...I didn't think ur fluid could be that bad on an 11'....some people never change trane fluid...I think the shudder problem can show itself intermittently with high pressures...some cars may tolerate it better than others...and it seems to handle shift high shift pressures of over 220 psi in above 2nd gear Nicely.not sure why tho

Exactly...so I'm sort of suggesting maintenance before tune adjustments. I feel with adjusting the tune you may just be masking an underlying issue.

I'd really like if someone with the stutter would try this before getting an adjustment made. My single experience is just not enough to confirm this.

Rich

Good point Rich.... If the problem is maintenance... and the tune is adjusted.... there could be problems again after the maintenance is done!

 

[ajpturbo]

Rich I had a car with 3k miles and true synthetic amsoil...it's arguably the best fluid available....the pressures when set in some of these tunes at over 200 is way over stock and the tranny simply does not like that...I think the stock setting is about 175 but I'd have to look...might not seem like it but that's a huge increase...it doesn't take large adjustments to make a difference in shift firmness when using that scalar in the tune

 

[BiGMaC]

Rich I had a car with 3k miles and true synthetic amsoil...it's arguably the best fluid available....the pressures when set in some of these tunes at over 200 is way over stock and the tranny simply does not like that...I think the stock setting is about 175 but I'd have to look...might not seem like it but that's a huge increase...it doesn't take large adjustments to make a difference in shift firmness when using that scalar in the tune

True ajp... from the posts here it seems that as the (already increased) 200psi tranny shift pressures are exceeded unwanted behaviors develop.