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      02-04-2020, 08:08 PM   #23
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Originally Posted by baldeagleman View Post
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Originally Posted by Steakpizza View Post
You can stack BM3 and XHP right? Any benefit?
Yes they do two completely different things
What would I see with XHP? I have BM3 and love it. I do need an Android device though I see.
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      02-04-2020, 09:42 PM   #24
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Originally Posted by Steakpizza View Post
What would I see with XHP?
I guess I'm not sure what to say. Did you even read this thread?

Go to the xHP website and read their description of the tune benefits. If you have a specific question after that, post it here.
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      02-05-2020, 12:47 AM   #25
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Originally Posted by Alarmin View Post
Hey All,

I've got a 340 currently running stage 2 BM3. I have been looking into adding an XHP trans tune but haven't seen much in the realm of experiences or reviews from people. I was mainly curious about the following:
1. How do the claims made on the xhp website translate to actual user experience?
2. Has anyone had any issues with the trans tune?
3. Would you recommend it?

Bonus points to anyone who can speak to how it pairs with an ECU Tune. Thanks in advance everyone!
I just flashed XHP stage 2 on my 18' 340 with BM3 stage 2 with catless dp. I'm still taking an easy as of yet (only 200 miles) with the trans flash but everything is flawlessly working. The blips on downshift are more pronounced in sport mode but so far so good. I ran a 3.8 0-60mph without it. I'm curious what I can do with some adjustments on the LC. But all in all for $350 u get everything and it's worth it.
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      02-05-2020, 02:09 AM   #26
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One little video from my car, I think its shift pretty fast..this is Xhp Stage 2.

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      02-05-2020, 12:25 PM   #27
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Well the dark side is definitely calling to me... I did actually send a few questions over to XHP Re: The trans tune and got some responses.

In response to my question "Are the stage 2 changes all still within safe parameters for the stock transmission?", XHP responded with the following:

"We do raise line pressures for faster shifting and the ability to run more torque with your tuner. Because the shifts are faster, there is less slip on the clutches and therefore less wear. This is all in safe parameters of the transmission. "

It seems they are stating that the trans tune would in fact provide LESS wear than a stock tranny tune. Now this seems kinda counterintuitive to me, since my impression would be that increasing line pressure would increase wear on the transmission. Am I right in this or am I missing something that would make their statement correct? Would the act of faster shifts actually somehow be better for the trans than stock?
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      02-05-2020, 01:35 PM   #28
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You are only missing the fact that you are asking a seller to point out the downsides of his product.... how likely did you think that was?

Even if the above has an element of truth, what about excess pressure, excess temperature, oil degradation, etc.?
Always read between the lines and mainly research user experience and especially those who have used it for some time. Appears that there are not many complaints, but I have not researched too much personally as it is not (yet) on my to-do.
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      02-05-2020, 01:56 PM   #29
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Quote:
Originally Posted by Skyhigh View Post
You are only missing the fact that you are asking a seller to point out the downsides of his product.... how likely did you think that was?

Even if the above has an element of truth, what about excess pressure, excess temperature, oil degradation, etc.?
Always read between the lines and mainly research user experience and especially those who have used it for some time. Appears that there are not many complaints, but I have not researched too much personally as it is not (yet) on my to-do.
Lol agreed. My bullshit sensor was rightly triggered. Just was a bit of a ballsy claim to say it’s even better than stock on their part. But you are right - user experience seems to be solid!
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      02-05-2020, 02:01 PM   #30
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There are far more parts to a transmission than just clutches.
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      02-05-2020, 02:05 PM   #31
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Slip is bad > shorter lifespan
Higher pressure > could wear out pump etc earlier but the requested load might be inside specification
You have to keep in mind that there are many ZF8 variants out there and all others have higher torque limits and hardware changes will be kept to a minimum. So the pump , lines could be the same as in a higher rated unit
Just look at the feedback of the guy with his 35d and the transmission worked just fine for many miles with sky high torque
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      02-05-2020, 03:57 PM   #32
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So with the torque limiter being reduced to 1000, does this mean my car is going to be more torquey? Sorry if it’s a stupid question, just no input on that everywhere I’ve read.

Also for the launch control being more aggressive, could I tune the launch control to a point where it’s less than stock? Whenever I try launch control I just spin for 3 seconds, before gripping hard. Thus my launch control is useless right now even on brand new Michelin sport A/S 3+. RWD, running MHD stage 2 with downpipe and intake.
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      02-05-2020, 04:21 PM   #33
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Quote:
Originally Posted by Sleeper340i View Post
So with the torque limiter being reduced to 1000, does this mean my car is going to be more torquey? Sorry if it's a stupid question, just no input on that everywhere I've read.

Also for the launch control being more aggressive, could I tune the launch control to a point where it's less than stock? Whenever I try launch control I just spin for 3 seconds, before gripping hard. Thus my launch control is useless right now even on brand new Michelin sport A/S 3+. RWD, running MHD stage 2 with downpipe and intake.
For the first question: it depends on your engine tune.
The explanation I got was that with the OEM map on the transmission there's a torque limiter in 3 and 6 gear. Why in those I don't know.
That's removed with xHP.
Then there's a torque limiter on the gearbox in general. As I recall it, it is at 640nm on the 8HP50.
If the engine delivers more than that the transmission will tell the engine to cut back.
That limit is by xHP software changed to 1000nm.
In my case I will get full use of the 750nm the engine can deliver and not just the 640nm from factory map
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      02-05-2020, 04:45 PM   #34
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ZF8HP50 has 550 Nm torque limit in all 8 gears. The 6 speed has lower limits in 3 and 6.

Stage 2 tunes can go over the 550 Nm limit, so either the tuner needs to send an altered torque value to the transmission, resulting in more slip in clutches and reduced effective torque transfer, or send correct value and use xHP to raise limits.
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      02-05-2020, 05:17 PM   #35
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Alright well that’s good to know! Since MHD does have option for xHP I’m definitely convinced to get this now. Should come in real useful when I upgrade my turbo as well.
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      02-05-2020, 05:21 PM   #36
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Quote:
Originally Posted by Sµpreme View Post
Quote:
Originally Posted by Steakpizza View Post
What would I see with XHP?
I guess I'm not sure what to say. Did you even read this thread?

Go to the xHP website and read their description of the tune benefits. If you have a specific question after that, post it here.
Bruh I am so sorry, I had another thread I meant to ask this on and got switched on me. My bad lol
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      02-05-2020, 07:13 PM   #37
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Quote:
Originally Posted by Steakpizza View Post
Bruh I am so sorry, I had another thread I meant to ask this on and got switched on me. My bad lol
No worries, happens to the best of us. Did you decide to try the trans flash?
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      02-05-2020, 07:16 PM   #38
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Quote:
Originally Posted by Sµpreme View Post
Quote:
Originally Posted by Steakpizza View Post
Bruh I am so sorry, I had another thread I meant to ask this on and got switched on me. My bad lol
No worries, happens to the best of us. Did you decide to try the trans flash?
Nah not yet. I need to figure out what Android device to get. If I can find a cheap Android tablet I would go that route. I hear IPhone support is nearing too though, so I may just wait.
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      02-05-2020, 07:45 PM   #39
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      02-06-2020, 02:26 AM   #40
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will the increase in line pressure not cause any tranny problems, or is this within the limits, if i would go for the xhp i would choose stage 2 only .
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      02-06-2020, 06:10 AM   #41
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Quote:
Originally Posted by kriszty View Post
will the increase in line pressure not cause any tranny problems, or is this within the limits, if i would go for the xhp i would choose stage 2 only .
No one will be able to answer that unless they are engineers for ZF and have classified info
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      02-06-2020, 08:28 AM   #42
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Quote:
Originally Posted by Dreculah View Post
I'm going to wait a couple of years to see if the tune grenades the transmission.
I've been using it since it came out, as long as transmission is serviced during its recommended intervals your fine. XHP sets up the maps to be safe, we are allowed to create custom maps which in turn can bring more wear and tear but we are warned in advance and those are extreme values.
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      02-06-2020, 12:16 PM   #43
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Quote:
Originally Posted by Sµpreme View Post
xHP stage 3 here, just flashed a few weeks ago. I really like it.

I did the flash in prep for doing a custom E50 tune with Wedge Performance in order to remove torque limiters, was running MHD E30 OTS before that. I could tell an immediate change in the personality of the car, even before getting the Wedge base map. It really 'wakes up' the 8AT. The best way I can describe it is that I was making a fair bit of power on the MHD E30 map, but I didn't realize that the rest of the drivetrain needed to 'catch up' to the new power level I was making.

The best part is that more than ever before, I have 2 very different cars:
In Comfort mode, standard Drive, the car is polished, responsive and powerful. The exhaust flap is closed, the sound is subdued. (I'm catless + MPPSK exhaust.

Click to Sport+ and slap the shifter into Sport Drive and she's a banshee, aggressively holding gears and popping through downshifts. The xHP flash really accentuates the stark contrast between the two drive modes.

If you have a chance to drive someone's 340 with xHP, do it.
I have the exact same setup as you wow and I’m dojng e50 with cpi kit right now do you recommend wedge performance for a custom tune ?
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      02-06-2020, 12:22 PM   #44
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Quote:
Originally Posted by Stanio View Post
I've been stage 3 for more than 10k miles and as soon as they came out with Stage 4 I flashed it.

This trans tune is amazing! Stage 4 has the drivability of stage 3 but once you move the shifter to the left the fun begins. It keeps the revs high and it has really aggressive shift points.

It's the only tune that would make me keep my car for longer than I anticipated and their customer service is top notch.

No issues so far, only smiles.

Money well spend in my honest opinion
Stage 4???
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