How big is the problem with faulty turbos on VRS TSi?

[knudsen]

Have read a lot about IHI is20  turboers that dies especially if the car gets a re-map but also on standard cars that have driven quite a few t.km.

I can figure out how big the problem is on Octavia VRS. Is it 0.1% or is it 5% who dies?
And if the turbo dies, is it a "just" new turbo or is it often with complet engine failure to follow?

 

my car is from 11/2014 (32000 KM) and has a turbo 06K 145 702 T is it safe to re-map ?

What are your experiences with re-map and dead turbo

 

[SC03OTT]

I didn’t realise it was a problem? Has there been a load of threads I’ve missed discussing this?

[knudsen]

12 minutes ago, SC03OTT said:

I didn’t realise it was a problem? Has there been a load of threads I’ve missed discussing this?

There are not many threads about it on this forum
but if you google there are many golf mk7 GTI with the same engine and turbo that have had problems

https://www.golfmk7.com/forums/showthread.php?t=27708

https://www.golfmk7.com/forums/showthread.php?t=5276

[Damo]

Not heard this before either.

Look at it like this... if it goes, then ideal time for a big turbo upgrade 

[flybynite]

The generation of the IS20 that were causing problems tended to be fitted to the MK7 GTI before the VRS came along. The versions of the IS20 fitted to the VRS seem to be the later ones that have less of a problem.

 

Some of the early re-maps just exacerbated a problem that was already there.

 

16 minutes ago, Damo said:

Look at it like this... if it goes, then ideal time for a big turbo upgrade 

 

Trouble is the IS38 wasn't immune to the problems either, some hybrids carried the same problem through also.

 

Generally not an issue now but was certainly a problem before and good to know the problem version numbers if buying a turbo with no history.

[Ads230]

Have a remapped Pre-FL 230 (2016), and had 1 issue 2 months ago with the IS20 turbo actuator sticking. It caused a 'Start/Stop Error' error code; took it to a VCDS specialist down the road and they did a full open-close on the actuator (which apparently 'randomly' sticks every once in a while). 

 

That's the only issue I've ever had in 1.5 years of 'mapped ownership

[knudsen]

8 hours ago, flybynite said:

 

 

Generally not an issue now but was certainly a problem before and good to know the problem version numbers if buying a turbo with no history.

that's exactly what worries me when my car is from 11/2014 and has a turbo with part number 06k 145 702 T which is the 4 rev. turbo and now they are using part  number 06k 145 722L which is the 8th rev. turbo

[knudsen]

But If no one is in uk with vrs from 2013 or 2014 that has experienced turbo problems, I think the problem is non existent or very small since uk is the country in the EU that has sold most Octavia vrs. and I think there are many vrs in uk that have been re-map

[flybynite]

1 hour ago, Ads230 said:

It caused a 'Start/Stop Error' error code; took it to a VCDS specialist down the road and they did a full open-close on the actuator (which apparently 'randomly' sticks every once in a while). 

 

That would tie in with what some suspected was the problem. Although many reckon the turbo just failed, many thought the turbo massively over-sped then failed, most likely cause is a sticky wastegate, made worse by remapped  boost pressures.

 

Definitely seems to be more than one cause but that was strongly suspected as one of them.

 

9 minutes ago, knudsen said:

that's exactly what worries me when my car is from 11/2014 and has a turbo with part number 06k 145 702 T which is the 4 rev. turbo and now they are using part  number 06k 145 722L which is the 8th rev. turbo

 

I'm using a 722 G which is only one gen later and it has no problems. The vRs never had the early versions which is why there have been few, if any failures. But I would be wary of hammering it if it had any problems indicative of a sticky wastegate.

[knudsen]

How can I detect defective wastegate? Can I see it with VCDS?

What are the symptoms of sticky wastgate?

[flybynite]

From memory engine/basic settings - output test. It is in a list there somewhere.

 

If it sticks it should throw a code for something, depending on where and when it sticks.

 

Problem is they don't sell the wastegate actuator separate from the turbo.

[ahenners]

10 hours ago, flybynite said:

The generation of the IS20 that were causing problems tended to be fitted to the MK7 GTI before the VRS came along. The versions of the IS20 fitted to the VRS seem to be the later ones that have less of a problem.

 

Are you sure about this?

 

The MK 3 VRS with the same CHHB engine was available about 2 months after the MK7 GTI.

 

ETKA appears to show the same turbos, K, Q, R and T for both the VRS and GTI. Looks like both had K, Q and R up till early 2014. As far as I can see, there is no major difference between the turbos fitted to the two since production started.

 

http://www.oemepc.com/vw/part_single/catalog/vw/markt/RDW/modell/GOLF/year/2013/drive_standart/746/hg_ug/145/subcategory/145050/part_id/0/lang/e

 

http://www.oemepc.com/skoda/part_single/catalog/sk/markt/CZ/modell/OCT/year/2014/drive_standart/753/hg_ug/145/subcategory/145055/part_id/2564698/lang/e

 

Edited 25 July, 2018 by ahenners

[Ant-Vrs]

My is20 has been fine running stage 2 330bhp for about 9 months before going for the is38 and stage 3 390bhp. Only went stage 3 because I got the turbo at a decent price or I would have been still stage 2 power 

[Magget]

23 hours ago, knudsen said:

Have read a lot about IHI is20  turboers that dies especially if the car gets a re-map but also on standard cars that have driven quite a few t.km.

I can figure out how big the problem is on Octavia VRS. Is it 0.1% or is it 5% who dies?
And if the turbo dies, is it a "just" new turbo or is it often with complet engine failure to follow?

 

my car is from 11/2014 (32000 KM) and has a turbo 06K 145 702 T is it safe to re-map ?

What are your experiences with re-map and dead turbo

 

50K miles running a bit under 320Hp and 374 ft. lbs and no problems whatsoever (apart from the clutch which gave up). The car is 2013 VRS TSI and has 92K miles on it currently. Also been running 3 different intakes during that time and it's all good. If the turbo goes, IS38 goes in 

[superbtte]

1 minute ago, Magget said:

IS38 goes in 

 

Oh yeah! 

[ahenners]

32 minutes ago, Magget said:

50K miles running a bit under 320Hp and 374 ft. lbs and no problems whatsoever (apart from the clutch which gave up). The car is 2013 VRS TSI and has 92K miles on it currently. Also been running 3 different intakes during that time and it's all good. If the turbo goes, IS38 goes in 

 

Which map do you have magget?

[Magget]

Just now, ahenners said:

 

Which map do you have magget?

Shark performance in Mansfield did mine. It's a bit conservative compared to APR numbers (295) after remap where APR and some other places quote 305 and some even over 310. 

I made the difference with other mods and not overboosting the turbo, that probably helps with longevity of it as well.

[carrock]

On ‎25‎/‎07‎/‎2018 at 08:41, knudsen said:

Have read a lot about IHI is20  turboers that dies especially if the car gets a re-map but also on standard cars that have driven quite a few t.km.

I can figure out how big the problem is on Octavia VRS. Is it 0.1% or is it 5% who dies?
And if the turbo dies, is it a "just" new turbo or is it often with complet engine failure to follow?

 

my car is from 11/2014 (32000 KM) and has a turbo 06K 145 702 T is it safe to re-map ?

What are your experiences with re-map and dead turbo

 

93 pages of bedtime reading here 

https://www.golfmk7.com/forums/showthread.php?t=5276

 

[knudsen]

32 minutes ago, carrock said:

93 pages of bedtime reading here 

https://www.golfmk7.com/forums/showthread.php?t=5276

 

I have read all 93 pages,

that's why I'm worried

[flybynite]

10 hours ago, ahenners said:

Are you sure about this?

 

The MK 3 VRS with the same CHHB engine was available about 2 months after the MK7 GTI.

 

ETKA appears to show the same turbos, K, Q, R and T for both the VRS and GTI. Looks like both had K, Q and R up till early 2014. As far as I can see, there is no major difference between the turbos fitted to the two since production started.

 

The vRS came after the GTi, even if only a matter of months that can be a long time in part evolution. By second half of 2014 they were already on 722G (doesn't mean fitted to all cars then just that is the date for mine). ETKA shows what could have been fitted, and what can fit, not necessarily what was fitted in practice. 

 

The problem was a complex one and AFAIK not officially admitted by the VAG group, I don't think anyone got to the bottom of it, it just got less over time.

 

I think it is safe to say the vRS has not been suffering the same failure rate as the early GTi even when mapped otherwise you would have heard about it by now. There are lots of things that can be different, not just the part. Everything from air temperatures to fuel quality, oil quality etc etc play a part.

 

15 minutes ago, carrock said:

93 pages of bedtime reading here 

https://www.golfmk7.com/forums/showthread.php?t=5276

 

Good but someone already posted that in the third post  it is an interesting read but not really conclusive. Lot of confusion between IS20 and IS38 part numbers