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Golf R 2019 WLTP - Looses MPI (Dual Injection) !

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I'm almost completely certain the new 2019 WLTP Golf R's do not come with dual injection! :(:(

 

Having gone through the latest updates to ETKA, the engine code for the new WLTP Golf R is DNUE

This is the new 300ps variant as expected.

 

However the intake manifold for this engine, does not have the port injectors or fuel rail for the injectors.

This I've confirmed with the new PR code for EU6 BG emission engines, PR-7CS.

Also the 2019 Audi S3 uses this same engine and again it does not have the port injectors.

 

So now the engines are the same as what the US and Australia had - just single direct injection.

 

This is a deal breaker for me - for those who don't know one of the really good features brought in on GTI/R EU mk7 engines was dual injection.

It completely solved the problem of carbon build up on the intake valves, which has plagued direct injection engines since their incarnation.

Problems include poor fuel efficiency, cold start misfires and a general drop in power and poor running in as little as 30-40k miles (albeit thats for people who do a lot of short journeys), requiring periodic expensive carbon cleaning with media blasting or direct mechanical scraping of the valves.
The dual injection also allowed for a much smoother idle than past FSI/TSI/TFSI engines, as the fuel mixed better at low load (idle) via port injection. 

 

I am not happy and all those who have been waiting months and months should also not be happy...…..you can get rid of a frameless mirror, a bit of chrome on a button and stick a cancerous filter lump in - as these are all things that either dont matter or can be undone.

 

But now they have f'ed the engine long term performance, efficiency and smooth running.

 

I will spend the next week trying to get VW to confirm the above - but it's in black and white on their parts database, so i cant see it being otherwise :(

 

 

 

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Forgot to mention this also applies to the 2019 GTI as well.

 

My findings below on ETKA, confirmed Golf R / Audi S3 new WLTP engine code as DNUE

(it's the only 221KW / 300ps engine with the right car series and time frame - 09/2018)

 

Note: VW use PS as measure of horse power...in image HP refers to metric horse power, i.e. PS.

Also note VW still call the R - 'R32' in some of its technical documentation.

Image1.png.14cc2fcdd31aa0a2fb092b6a5c08608d.png

 

On Audi section, its clear that the intake manifold doesn't have the port injectors or fuel rail.

New manifold part number is 06L133201FA - same part used on S3 and Golf R

 

Note: S3 models are covered under A3 on Audi (the S3 is just a special A3...much like the R is a special Golf)

Image2.thumb.png.2fef99ca1bbfed3ec34aa2723fc8f410.png

 

The Golf R section is slightly less clear as the page for the intake manifold shares the same page for the pre-WLTP version....however PR codes for WLTP emission models (PR-7CS) show that there is no fuel rail nor port injectors, plus the same manifold part number 06L133201FA as found on the Audi page.

 

For reference here is the old manifold, showing the port injectors (26) and extra fuel rail (29) : 

 

Image3.thumb.png.c00717a4745e3beac0b41b1227abc101.png

PR code 7MM is for EU6 pre-WLTP emmissions.

 

B*ll*cks! :( 

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For those who don't know about carbon build up issues with direct injection (which is now what these engines will suffer from having lost their secondary port injectors), you can learn about how direct injection works and its significant long term problems with carbon buildup here:

 

 

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Did the early Audi RS4s have direct injection? I read a buying guide for them and one point that a few RS4 specialists brought up was carbon coking up the valve train and causing power loss resulting in the engine needing cleaning. Very interesting post and a possible deal breaker for me as I sometimes keep my car long term.


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23 minutes ago, camelsac2002 said:

Did the early Audi RS4s have direct injection? I read a buying guide for them and one point that a few RS4 specialists brought up was carbon coking up the valve train and causing power loss resulting in the engine needing cleaning. Very interesting post and a possible deal breaker for me as I sometimes keep my car long term. emoji106.png


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This was a well-known issue with the B7 RS4. The carbon build-up on some of their engines is appalling. The consensus seems to be that cleaning will improve things for a while but it will just build back up again over time. They were supposed to have 414 BHP from the factory. I've seen dyno readouts where they're down to as low as 360-370 purely from the build-up.

 

I didn't realise it affected so many other engines.

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1 hour ago, clarky2015 said:

What do you guys need to confirm this? 

 

Someone with a post WLTP S3 to lift cover off engine and photograph? Or same for a post WLTP Golf GTI PP?

I think the S3 would be best, anyone have access to one or a mate that works as an Audi tech?

 

Bad enough waiting 9 -10 months for a car without VW screwing the engine up.

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42 minutes ago, Dollyman said:

I think the S3 would be best, anyone have access to one or a mate that works as an Audi tech?

 

Bad enough waiting 9 -10 months for a car without VW screwing the engine up.

I've asked on the Audi forum as a few guys have heir brand new post WLTP S3's delivered 

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Surely though VW would have come up with a work around to combat the build up issue? Not to state the obvious but it's 2019 and technology has moved on a fair way. Or do you guys think this is a bodge job for the last run of this platform R? 

 

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8 minutes ago, clarky2015 said:

Surely though VW would have come up with a work around to combat the build up issue? Not to state the obvious but it's 2019 and technology has moved on a fair way. Or do you guys think this is a bodge job for the last run of this platform R? 

 

 

I would guess bodge.  Is there any sign of VW putting in one of these catch can filters?

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Sounds like a bunch of compromises to get these cars through WLTP. I’m surprised they bothered really and didn’t drop the R from production given there are only a few months left of production for the Golf 7. But then I guess WLTP affects all cars other than the R? If this is the case then the R is just one of many modals they had to update.

 

Let’s hope they come up with a better solution for the Golf 8.

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This was a well-known issue with the B7 RS4. The carbon build-up on some of their engines is appalling. The consensus seems to be that cleaning will improve things for a while but it will just build back up again over time. They were supposed to have 414 BHP from the factory. I've seen dyno readouts where they're down to as low as 360-370 purely from the build-up.
 
I didn't realise it affected so many other engines.
Probably explains why I toasted one off the lights in my standard R! This is making me have second thoughts about ordering a new one. Might just keep mine and tweak it. Decisions, decisions!!

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