$125....sounds like a deal. BD Diesel isn't just a fly by night group of guys.

 

as said, bd diesel usually does their RnD but if the whole set up is stock, its probably not needed.

 

I have a 11 6.7 deleted wis h&s tuning. 7in lift with 38x15.5s underneath it I don’t beat on the truck. It would be nice if this would be a simple upgrade to just give the trans some more holding power than it has already. Just for peace of mind. I just feel like those pressures are pretty high. Maybe enough to blow seals. And then would require a rebuild. I’m not say BD doesn’t do there homework I’ve gotten stuff from them before. And I have no complaints what so ever.

 

My concern would be compatibility with TCM tunes

 

That was another thing I was concerned about would you have to run the factory trans tuning for the vehicle. If you ran trans tuning which is supposed to account from flare ups and harder lock up would it just be ridiculous hard shifting shifting and start breaking ****. Or I guess a complete custom tune would work. As long as the tuner knows what you have done. Would be my guess. I am nervous to bite the bullit and try it. But I need to pull my pan and do a fluid filter change soon. Just not sure if I want to try this until I here more about it.

 

Pretty sure transmission line pressure is commanded by tuning. Tuners set the line pressures electronically now within their parameters, so it should still put out the same line pressure as it would with the stock solenoids.

I’m gonna ask my tuner about these BD solenoids when he gets back from holidays as I have a rough 3-4 upshift and 3-2 downshift. I’ve had multiple tunes over the years and they have all done it so I would imagine it is due to the solenoids.

 

I am interested in this. I am running tunes and still have shift flare, mainly 5-6, but some 4-5. I will shoot info to tuner to see what they think. Also, as mentioned, those pressures seem silly high, font you guys think?

Cale

 

Anyone y’all to their tuner or give this guy a try? I have a question into Tyrant, hopefully he will answer back.

Cale

 

Anyone try this out yet?

 

I did and it was a waste of money. Flares are still there and the shifting was the same. It’s still in the tranny as I wasn’t about to drop the pan just to swap. Been in for 5k Miles.

Cale

 

That’s to bad it was a waste. I was hoping for some good results. Sorry it didnt fix your flare ups

 

Thanks for the reply. Sorry to hear it didn't fix what you had hoped for, but I'm also not too surprised it didn't help with flares. That sounds more like a tuning or valve body issue, granted I guess in theory higher line pressure could help.

I think there is still value here in the added clutch holding force, which is nothing you would notice just driving. My main concern is if the seals can hold the doubled pressure long term. I'm sure BD did testing on this.... but still makes me nervous 50kmi down the road.

 

Has anyone installed this Sonnax kit? I used a bunch of Sonnax parts when I built my 4R100, they make great stuff.

https://www.sonnax.com/parts/4307-zip-kit

 

Anyone try BD POWER 6r140 Pressure Controller? Engages full line pressure at 15psi boost and over.

"The stock line pressure is load dependent and is around 70-170 PSI. The BD-Power 1031320 6R140 Pressure Controller overrides the pressure control solenoid and provides a full 300 PSI at wide open throttle. As a result, clutch slippage and wear and tear are drastically reduced. This gives your transmission a longer life and 76% more theoretical holding power! Unlike solenoid foolers or plugs that are always active, the 1031320 is only active when boost is over 15 PSI. The 6R140 Pressure Controller does not require a transmission relearn and does not create parasitic load or extra heat when inactive. "

Or will the sonnax kit be better for firm or soft sifts and clutch slippage?

 

Any experience or update on this product since the last post years ago? I recently discovered it and am coming up on a fluid and filter change. I do run intact tuning, so the increased holding power is attractive to me. Just looking to see if anyone has had some miles on it; thanks for any input!

 

I've spoken to a few people who like. Never got around to it myself, sort of wished I had.

 

After looking into it further, I also see a module that applies the same pressure but does so once boost reaches 15 PSI and drops line pressure after boost is reduced to 10 PSI. I am wondering if this is a better option. It is certainly easier to install and wouldn't be full pressure full time, whereas my understanding is the solenoid provides full line pressure 100% of the time. I do have transmission tuning but am not worried about any interference between the two.

 

I was told either way would work good, not to mention tuning could do the same thing.

 

I put up my Line Pressure on the monitor to see what the transmission tuning is pushing. It seems to peak in the mid 200's, and that's with a heavy foot rowing through a few gears (highway entry).

 

I thought about the module limits of 15PSI boost as the set point. Then drove around town. I'd have to be hammer down to get it to trigger at the 15 PSI boost set point. Not really how I want to drive around town....well not all the time anyway. Then I wasn't really chomping the bit to dig into the trans pan, swap solenoids, etc etc etc. Maybe when I go to refresh the trans fluid I'll give it another thought to get the solenoid.

 

It's easy enough if you are there; Thoroughbred Diesel does a great product install video on this procedure (link below). I was thinking the same thing, and if I am driving some slower back roads or going through town, my boost is not getting up there for very long, if at all. I would prefer if the threshold were lower, but I guess that's what the solenoid is for!