Just want to share what happens with trans and big RWHP - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

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Old 10-09-2013, 04:20 PM
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Just want to share what happens with trans and big RWHP

I have been seeing weird stuff happening with the transmission and the high level of power I'm making. When I want to get on it hard say for 35-40 mph, and spin the tires something weird happens. The truck decides to shift in between gears like into neutral. I thought maybe the transmission's clutches where going but they are not.

So here is what I have learned and sharing to help others. I talked to Jesse and Andy Warren who built the transmission I have and they told me that 6.0 does the problem I'm having due to the ECM. They told me that when the truck spins the tires the ECM sees that the wheel speed is not matching the transmission speed and through the adaptive learning makes the trans just stop working and puts it in neutral. Andy told me that Matt from gearheads turns the adaptive learning off to stop this from happening. Jesse sees it in the pulling truck when the tires are spinning hard and transmission is shifting into other gears.

For built trannies it is also wise to put a tune in and drive it easy until the trans learns before hitting on it. Sometimes the tranny might pound the gears extremely hard and bust something if you don't let it learn the tune. Hope the info helps out, ever since this truck has stepped into the big power there has been some things that need adjusted for it.
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Old 10-09-2013, 04:54 PM
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Quote:
Originally Posted by madpowerstroke View Post
I have been seeing weird stuff happening with the transmission and the high level of power I'm making. When I want to get on it hard say for 35-40 mph, and spin the tires something weird happens. The truck decides to shift in between gears like into neutral. I thought maybe the transmission's clutches where going but they are not.

So here is what I have learned and sharing to help others. I talked to Jesse and Andy Warren who built the transmission I have and they told me that 6.0 does the problem I'm having due to the ECM. They told me that when the truck spins the tires the ECM sees that the wheel speed is not matching the transmission speed and through the adaptive learning makes the trans just stop working and puts it in neutral. Andy told me that Matt from gearheads turns the adaptive learning off to stop this from happening. Jesse sees it in the pulling truck when the tires are spinning hard and transmission is shifting into other gears.

For built trannies it is also wise to put a tune in and drive it easy until the trans learns before hitting on it. Sometimes the tranny might pound the gears extremely hard and bust something if you don't let it learn the tune. Hope the info helps out, ever since this truck has stepped into the big power there has been some things that need adjusted for it.
Well that helps me a lot because Im having the same issue with the trans not shifting if I get on it hard. I'll have to let my tuner know and see if it makes a difference with it off. Thanks for posting that Adrian
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Old 10-09-2013, 05:44 PM
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So, there is a performance fail safe.
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Old 10-09-2013, 06:07 PM
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Almost idiot proof... almost.
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Old 10-09-2013, 06:13 PM
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It's really hard to tune the 5R to do what you want, when you want, especially on a 6.0. It got better on the 6.4 with the addition of the separate TCM. Only 3 or 4 tuners can do it. That is why you see 4R conversions becoming more popular, way easier to control when they shift, the 5R has a lot of different inputs that vary when they should shift, regardless, when you hit "neutral", you are destroying your clutches/trans.
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Old 10-09-2013, 06:21 PM
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I had this issue on a certain tune and strategy. Same tune and settings (confirmed by the tune writer) on a different strategy and the issue was gone. I noticed in my trunk on my strategys that the newer TCM strategy is great for low power and town driving. Now the older TCM strategys aren't as nice around town but don't seem to have the issues putting the power down.
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Old 10-09-2013, 06:21 PM
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I just bought a heavy hauler race series from NADP and they told me to take the tune from sct out before before putting it in performance saying I could blow the pump. Do I need to have a specific tune wrote for truck now or just have current tune revised without the trans tune? If so, should I get rid of the tune altogether and just run ficm tunes? Sorry for highjack just firgured it fell in line with subject..
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Old 10-09-2013, 06:45 PM
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This latest revelation proves without a shadow of a doubt that these trucks weren't engineered to do what we're attempting to do with them and the learning curve can be exhaustive and expensive. There will always be a weak link and Adrian is the best at finding them. LOL So now it confirms what Adrian as tried to tell us in the past with 600HP and 900+ tq.... you will need a tranny.

So it seems even with a built tranny 700+ hp and 1?00 tq will destroy a tranny.

I"ll be completely satisfied if we can just get the Stage 1 & Stage 2 on some trucks and on the Market satisfying the majority of what we need these trucks to do.

I wouldn't be surprised to see an AT or worse MT tire explode on the street since they aren't Z rated and designed to be ran at 100 + MPH.

My .02

Denny
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Old 10-09-2013, 06:51 PM
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Quote:
Originally Posted by Vizsla View Post
It's really hard to tune the 5R to do what you want, when you want, especially on a 6.0. It got better on the 6.4 with the addition of the separate TCM. Only 3 or 4 tuners can do it. That is why you see 4R conversions becoming more popular, way easier to control when they shift, the 5R has a lot of different inputs that vary when they should shift, regardless, when you hit "neutral", you are destroying your clutches/trans.
I wonder how guys like Ellerton and Marroni (hope that's spelled right) are able to control their 5Rs. They don't seem to have a problem and don't advocate the 4R either. I'm sure there is a lot to tuning (as with just about everything on the 6.0 ).
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Old 10-09-2013, 06:52 PM
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I have experienced this, the trans just kicks out of gear while spinning the tires. Definatly not a shift flare, it was on one of Matt's tunes also. Is there a setting that he can turn off or is the strategy that he's writing off of?
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