Mk7.5 Golf - News and Discussion Thread

[DreamensioN]

Hey guys - posting in here because it's a lot more active than the CC/Arteon thread - but I've got a question.

Those of you with the Golf GTI/R - when you bring up your digital performance gauges (boost, oil temp, Kw etc) - what does your boost read when you're off throttle or the car is idle? In the Arteon I'm always reading positive pressure whether the car is idle, or if I'm coasting. I'm not sure if this is normal as in previous cars that have had mechanical boost gauges that were tapped into the plenum, off throttle was always a negative pressure.

So my 2 questions are - is anybody having the same experience as me, and, does anybody know why it always reads positive pressure?

[SteveMc]

Hey guys - posting in here because it's a lot more active than the CC/Arteon thread - but I've got a question.

Those of you with the Golf GTI/R - when you bring up your digital performance gauges (boost, oil temp, Kw etc) - what does your boost read when you're off throttle or the car is idle? In the Arteon I'm always reading positive pressure whether the car is idle, or if I'm coasting. I'm not sure if this is normal as in previous cars that have had mechanical boost gauges that were tapped into the plenum, off throttle was always a negative pressure.

So my 2 questions are - is anybody having the same experience as me, and, does anybody know why it always reads positive pressure?

Yep - that's not an error - all our cars read about 0.2-0.3 bar at idle. The boost gauge reads absolute pressure. So, if the chamber containing the gauge was completely open to the atmosphere the value would read 1 bar, or around 13PSI - this being atmospheric pressure at sea level. So any number below this means the engine still has to suck it's air though the intake channels. Meaning the boost being generated by the turbo, in Golfs at least, is represented by the difference over 1.0 bar.

One of the popular reviews on the R got this wrong (performancedrive.com.au from memory) claiming the turbo on the R was generating a "ballistic" 27 pounds of boost, and even put it down as a possible negative for the car's long term durability. They were obviously looking at the absolute boost from the centre console display.

Wouldn't it be good if they were, though.

[DreamensioN]

Yep - that's not an error - all our cars read about 0.2-0.3 bar at idle. The boost gauge reads absolute pressure. So, if the chamber containing the gauge was completely open to the atmosphere the value would read 1 bar, or around 13PSI - this being atmospheric pressure at sea level. So any number below this means the engine still has to suck it's air though the intake channels. Meaning the boost being generated by the turbo, in Golfs at least, is represented by the difference over 1.0 bar.

One of the popular reviews on the R got this wrong (performancedrive.com.au from memory) claiming the turbo on the R was generating a "ballistic" 27 pounds of boost, and even put it down as a possible negative for the car's long term durability. They were obviously looking at the absolute boost from the centre console display.

Wouldn't it be good if they were, though.

Ahhh ok. That makes sense if it's reading absolute pressure. Thanks for the explanation!

[Facelift]

Yeah fully agreed! In all fairness, my battery might have gone flat, I hardwired my dashcam to it and set the regulator to a minimal 12v cutoff. Acc to the technician, the side assist & blind spot coding somehow “disappear” and they have to reload the relevant coding in again. They said they had a couple of cars coming in for similar issue so hopefully this fixes it.

BTW, what is side assist? Isn’t it the same as blind spot assist?


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[Rooboy]

Side assist demonstrated in this vid

[GabrielT]

BTW, what is side assist? Isn’t it the same as blind spot assist?


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Exactly like what rooboy’s video. I only have side assist, front assist and lane assist as option when the I have the coding error issue. After the recoding, I no longer have the side assist option (splits up to blind spot and rear traffic alert). Should still work the same as the video if you tick all the options.

Totally unrelated, asked the technician if traffic jam assist could be activated but haven’t got a definite answer from him. Anyone have any luck with this?

[Rooboy]

It was talked about in other groups and Kamold has been able to enable TJA on some Tiggys and Passats in Sydney but there is a cost involved.

[GabrielT]

It was talked about in other groups and Kamold has been able to enable TJA on some Tiggys and Passats in Sydney but there is a cost involved.

Yeah aware of third party coding. Just bit concerned if it voids the warranty sighhhhh. Tried VWA but got mixed responses.

[CNBLU]

My favorite colour ......loooks brilliant. Congratulations and enjoy safely.

Cheers man will do

Looks great! Love the colour, tho had two grey cars time for me to change to lapiz. I can’t wait! Enjoy!



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Thanks mate. The best colour IMO

Schmik, man. I think I now like all the colors the R is offered in, except the black. Every time I see one in another color I wonder if I should've got that one instead of Lapiz. Re - the sound - there's been some comments before about the .5 changes to the exhaust - do you really think the exhaust is louder, or just a more vocal soundaktor ? The tailpipes appear larger in our model - so maybe there was some sound added to combat the RS, as rumored.

Good point. It could be the soundaktor...... its a different sound though. Just as loud as the 7R but more burbly if that makes sense. Will sound the bees knees once the DP goes on thats for sure!!!

Gav.

[Facelift]

Exactly like what rooboy’s video. I only have side assist, front assist and lane assist as option when the I have the coding error issue. After the recoding, I no longer have the side assist option (splits up to blind spot and rear traffic alert). Should still work the same as the video if you tick all the options.

Ok. Makes sense. I’ve seen it only as blind spot/rear traffic alert.


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