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Old 07-15-2015, 01:05 PM   #1
tsmack
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DSG Clamping Force

I have a K04 and in trying to decide which DSG tune to go with, I have seen that most tunes offer improvements in shift points, launch control, display options, auto up shifting in MM and so on. The one major variation seems to be whether or not clamping force of the clutch packs is occurring or not and to what degree. Some offer various stages of clamping force to hold the added torque output for bigger turbos.

The questions I have regarding this:

-While increasing clamping force will help prevent slippage, does that create more heat and wear on the rest of the transmission such as the mechtronic unit?

-At what point is the clamping force increase too much for the stock cooling system for the DSG?

-Is clamping force increase a preventative measure for clutch wear or should one wait to encounter slippage before moving to a DSG tune with extra clamping force?
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Old 07-15-2015, 01:17 PM   #2
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GIAC
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Old 07-15-2015, 01:19 PM   #3
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Quote:
Originally Posted by tsmack View Post
I have a K04 and in trying to decide which DSG tune to go with, I have seen that most tunes offer improvements in shift points, launch control, display options, auto up shifting in MM and so on. The one major variation seems to be whether or not clamping force of the clutch packs is occurring or not and to what degree. Some offer various stages of clamping force to hold the added torque output for bigger turbos.

The questions I have regarding this:

-While increasing clamping force will help prevent slippage, does that create more heat and wear on the rest of the transmission such as the mechtronic unit?

-At what point is the clamping force increase too much for the stock cooling system for the DSG?

-Is clamping force increase a preventative measure for clutch wear or should one wait to encounter slippage before moving to a DSG tune with extra clamping force?



As far as I know only DM does it.. HPA also has a stage 3 which is also but it is insanely expensive and none of their dealer is actually able to tell you much about it..

To answer your question a slipping clutch will generate a lot more heat than the tune that prevents it...
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Old 07-15-2015, 01:36 PM   #4
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So far HPA and UM I have validated increase pressure. APR does not and I am looking into GIAC and Uni.
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Old 07-15-2015, 01:38 PM   #5
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I would agree that if you are having slippage the. It clearly makes sense to get a tune that increases clamping forces, but if you have no slippage???
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Old 07-15-2015, 01:54 PM   #6
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Uni Stage 2 does increase clamping pressure which is what I have on the car at the moment. Works very well and plays nice with other tunes. I've had it while on Eurodyne and Revo with no issues.
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Old 07-15-2015, 05:55 PM   #7
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If any tuner says they are increasing clamping pressure on your DQ250 Exx or Fxx transmission, ask for proof.
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Old 07-15-2015, 06:02 PM   #8
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If your slipping with your DSG you have other issues. I am DSG flashed by APR software and never had any slippage before or after. I know many local K04 DSG cars and none report any slipping.

Im thinking you are having other issues and a tune wont fix it.
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Old 07-15-2015, 06:29 PM   #9
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I have an HPA stage 3 tune and it's excellent. They are flexible with their prices and are somewhat customizable.

I had DSG slip in 5th gear as GT3071, never as K04 though; but all cars are different.

GIAC, HPA, Eurodyne and UM are the ones who increase clamping pressure. I have been in a Eurodyne DSG car, and GIAC DSG car and they are both rough on the streets. HPA is butter smooth and probably even smoother than OEM with increased pressure.

APR and UNI seems to be the only companies that doesn't increase clamping pressure. There are ways to trick the ECU and TCU via ECU and TCU software to not need it though... I know that's how Eurodyne gets around it.

I did A LOT of research on DSG software over the last three months.

Last edited by RGTI13; 07-15-2015 at 08:21 PM.
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Old 07-15-2015, 07:57 PM   #10
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RGTI13, I have looked at HPA as well and their product looks good, but prices are pretty high, at least what they state on the website. How easy was it to get their tune? Wasn't sure if I would need to find a dealer or if they offer an easier solution.

UM seems like a good option as well. Talked to them for a while about their DSG tunes options. They also work with APR tuned cars to make a tune for your setup which is nice.

Uni is not close for me so I do not have them high on my list. GIAC is an option but a different shop than where I go.

I do not have any slipping at this point, but have read about many who have developed it and if I venture down the big turbo path it becomes even more important. The reality is that if I spend the money I would prefer to future proof now versus paying double later.
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Old 07-15-2015, 08:03 PM   #11
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Quote:
Originally Posted by Arin@APR View Post
If any tuner says they are increasing clamping pressure on your DQ250 Exx or Fxx transmission, ask for proof.
Arin, I guess the fact that some like RGTI13 had slippage then, after a DSG tune that increases clamping pressure, the slippage goes away says something for this. Maybe it's all smoke and mirrors?

Why is it APR does not do this, or is that what the stage III DSG tune is going to offer?
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Old 07-15-2015, 08:14 PM   #12
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Quote:
Originally Posted by steemax View Post
Uni Stage 2 does increase clamping pressure which is what I have on the car at the moment. Works very well and plays nice with other tunes. I've had it while on Eurodyne and Revo with no issues.
Defintey not, the only it does is increase tq limit.
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Old 07-15-2015, 08:20 PM   #13
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Defintey not, the only it does is increase tq limit.
That's what I thought too. UNI increases tq limit.

I have LOGGED my clamping force before and after the HPA tune. It was increased.
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Old 07-15-2015, 08:21 PM   #14
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Originally Posted by RGTI13 View Post
I have an HPA stage 3 tune and it's excellent. They are flexible with their prices and are somewhat customizable.

I had DSG slip in 5th gear as GT3071, never as K04 though; but all cars are different.

GIAC, HPA, UNI, Eurodyne and UM are the ones who increase clamping pressure. I have been in a Eurodyne DSG car, and GIAC DSG car and they are both rough on the streets. HPA is butter smooth and probably even smoother than OEM with increased pressure.

APR seems to be the only company that doesn't increase clamping pressure. There are ways to trick the ECU and TCU via ECU and TCU software to not need it though... I know that's how Eurodyne gets around it.

I did A LOT of research on DSG software over the last three months.

Well in your long research you forgot DM.. We have a golf R here with 604nm of tq and only a tune and it doesn't slip... I think Arin is right let's look at the proof!
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