Query - 2017 Passat 206 TSI R - Tuning

[Wynnston]

Also, to everyone that's done the VCDS "Audi" throttle response hack. There is a cost. I discovered my launch and issues were related to this change.

TCS (Traction Control) does not behave well in the wet. I would say that both the Haldex and TCS aren't calibrated to the change in throttle behaviour.

I first noticed a difference when LC didn't behave itself properly. It would lose traction (in the dry), jolt and then not change into 2nd right away. After reverting back to the VW setting this didn't happen anymore.

When it was rather wet the other day, when in "Audi" mode the front wheels would easily break traction and when switched back to "VW" mode it behaved itself and was harder to break traction.

Like I said above, it might all be symptoms of the TCS/Haldex not being calibrated for the throttle, or that it really does confuse the ABS and other modules. I would recommend against the change. Each to their own of course

[DR074]

Maybe I should have read this post first.

I haven't had any dramas with both hacks, but it also hasn't been that wet here, and I have driven it a bit nannyish (haven't used LC), which now I think about it, is probably why fuel economy has been marginally better.

Thanks Wynnston

[Blackpaladin67]

Maybe I should have read this post first.

I haven't had any dramas with both hacks, but it also hasn't been that wet here, and I have driven it a bit nannyish (haven't used LC), which now I think about it, is probably why fuel economy has been marginally better.

Thanks Wynnston

Hi all,please advise what you mean by both hacks, i am only aware of the Audi one ?


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[DR074]

Sorry mate, there is also an XDS change you can make. Well, there are 2 different ways of making the car feel more like an AWD.

Set XDS to "Strong" - VW Golf Mk7 VCDS How-To

and

(Can't find link)

Select AWD Control Unit
Adaptation
Acoustic Measure, Wiring Logic
Choose from ‘Standard, Increased Traction, Less Noise’ - I chose Increased Traction.

I haven't tried the first one, but have tried the second one.

The above I did using OBDEleven, and you can use VCDS as well.

[Wynnston]

Sorry mate, there is also an XDS change you can make. Well, there are 2 different ways of making the car feel more like an AWD.

Set XDS to "Strong" - VW Golf Mk7 VCDS How-To

and

(Can't find link)

Select AWD Control Unit
Adaptation
Acoustic Measure, Wiring Logic
Choose from ‘Standard, Increased Traction, Less Noise’ - I chose Increased Traction.

I haven't tried the first one, but have tried the second one.

The above I did using OBDEleven, and you can use VCDS as well.

There was a guy on the MK7 forums warning about the XDS hack, he seems to think it caused him to wreck a MK7R on a freeway offramp in slippery conditions. Possibly not an issue for us, there is no ice in WA...

[Wynnston]

Hi all,please advise what you mean by both hacks, i am only aware of the Audi one ?


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Sorry, I'm talking about the same change being the Audi one under the engine control module options. I was fumbling around on the browser on my phone when I posted that so it was a bit of a mish mash.

[Wynnston]

I should mention that my test conditions weren't perfectly replicated, but I did my best to use the same sections of road/track to test my findings as well as roughly the same amount of water on the road.

[Blackpaladin67]

I done 5k on the audi engine mod only nothing bad to report. Wont be doing the second diff mod me thinks. appreciated the feedback on your trial s


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[Wynnston]

I done 5k on the audi engine mod only nothing bad to report. Wont be doing the second diff mod me thinks. appreciated the feedback on your trial s


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For every day driving I would imagine it would be more than fine and it's a huge plus for driveability.

[Blackpaladin67]

For every day driving I would imagine it would be more than fine and it's a huge plus for driveability.

Please expand on daily drive impact postives ?


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[DR074]

I've found the positiveimpact to the Audi hack is;
· Quicker off the lights
· Pulling out in traffic easier
· Getting through round abouts easier
· Overtaking
· Slightly increased heart rate
Negative impacts areprobably below;
· Easier to brake traction
· Tyre wear would increase
· Maybe more speeding tickets

[Blackpaladin67]

I've found the positiveimpact to the Audi hack is;
· Quicker off the lights
· Pulling out in traffic easier
· Getting through round abouts easier
· Overtaking
· Slightly increased heart rate
Negative impacts areprobably below;
· Easier to brake traction
· Tyre wear would increase
· Maybe more speeding tickets

Which hack engine or diff...like it DR rather humorous ...


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[DR074]

Thanks, wife doesn't think so.

I changed Engine Control Unit coding to Audi (byte 0, bit 0 - 2 from memory)
Then I changed AWD Control Unit adaption setting for Wiring Logic to Increased Traction, to offset the wheel spin from the Engine code change.

I didn't actually try the ABS Unit Change for Expanded Diff as I saw somewhere it used the brakes to control the car. I think this is the one Wynnston was saying was dangerous as well. Brake lockups on ice aren't that great.

I like the changes for around town driving. Peps it up a bit.

[Wynnston]

Please expand on daily drive impact postives ?


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Pros:

Better throttle response allows you to feel more in control. A delayed throttle makes you feel more disconnected, almost like having sluggish/sloppy steering.

In start stop traffic, the car is more responsive so you don't need as much throttle and you don't have that delayed jerk in acceleration which feels very much like turbo lag.

Cons:

Slight increase in chance of traction loss which I believe is caused by a less reactive Haldex system, also issues with launch control (won't affect most people). This may be completely moot for people that either don't use launch control or don't have a tune.

Yes it's a Passat and I would imagine a lot of people won't tune their car or drive it like a yob, but this is a tuning thread

[Goublin]

JB4 and Res Delete, but the Res Delete is obviously not going to give me any more power. What are you running to get the 12.7?

See my previous post on my mods. Ill post a pic of the engine. I've done the stage 2 + OEM/ racing line and some neuspeed parts.

I went to willow bank on saturday and did 5 runs all around 12.3.

My best run was 12.106 115mph......just wouldnt let me get the 11s.... though i had to ease off the launch control as the start was not what it should be. I after a few tweaks i think i can get 11s. Either way its very quick.