Hi,

 

Anyone know what the difference between the new 1.5 TSI (DPCA) and the old (DADA)

My Octavia had old 1.5 TSI engine. Kangaroo effect appeared and there was a vibration during ACT (2 cylinders) mode.

The SW update was partial solution.

My Kodiaq has new engine and there is no kangaroo and vibration.

 

I wonder what the differences are.

I believe the old 1.5TSi alternator wasn't producing enough torque at low revs which was rectified with the later engine.

They've modified the cylinder head on the new DPCA...

 

Audi / VW / Seat Skoda 1.5 TSI - 05E100032X / 05E103063FX / DPCA

 

 

 

 

      

Could be this improvement of cylinder head connestion with kangaroo fix older DADA engine?🤔

I suspect so, although it'll likely be one part of several 'system' changes...

Hey there,

 

Do you think it's possible that DADA oil spec is different from DACA oil spec (nothing else different: same car, sam 1.5 TSI, same service interval, same everything; only DPCA vs DADA type is different). 

This question is important to me, because I happen to own both octavias:  2018 DADA and 2019 DPCA engines; and each are given different engine oil at the maintenance (15.000 km fixed short interval).

 

Can anyone explain this phenomenon?

Edited 16 March, 20215 yr by pssecho
Mistyped engine type. It's an important spec.

1 hour ago, pssecho said:

Hey there,

 

Do you think it's possible that DADA oil spec is different from DACA oil spec (nothing else different: same car, sam 1.5 TSI, same service interval, same everything; only DPCA vs DADA type is different). 

This question is important to me, because I happen to own both octavias:  2018 DADA and 2019 DPCA engines; and each are given different engine oil at the maintenance (15.000 km fixed short interval).

 

Can anyone explain this phenomenon?

 

I very much doubt it. Even if there was a difference, it's be the long-life or variable intervals it would affect.

 

Some people specifically use an oil spec for short or fixed intervals whilst others will just use long-life oil regardless of how many miles the car covers. If I were to take a guess then I think that would account for the different oils used in your car.

 

Can't speak for anywhere else but in theory, the long-life oil is more expensive than standard oil here in the UK, however because long-life oil can be used for all mileages, some people only stock long life and std oil is special order ( i.e. more expensive ).

In the UK the cost of VW 504 00 /507 00  so 5w 30 FS III (Long Life oil)  for Variable or fixed servicing is very little compared to VW 502 00 so 5w 40 FS for fixed servicing of TSI engines.

 

The difference is the cost of the VW508 00 / 509 00 so 0w 20 FS IV that VW Group started using at the factory pre WLTP introduction and which is the recommended spec for TSI's & TDI's for Variable Servicing and Fixed Servicing.

 

VW Group never showed an oil spec for the Fixed Servicing and some dealers never used VW 508 00 / 509 00 but just VW 504 00.

 

Now some are using 0w 30 FS III oil in TSI's and TDI's.  

 

A 1.5TSI can have oil changes at Fixed Intervals and not have Long Life Oil used, be that the 0w 20 FS IV or 5w 30 FS III,  but you need to use the correct spec oil for Fixed Servicing.

That can be 5w 40 FS to VW502 00. 

 

 

http://briskoda.net/forums/topic/481795-what-oil-for-15-tsi

 

 

Below is what came out early on and is the spec for 'Variable / Flexible' Servicing Regimes, Oil & Filter changes. 

Not for Fixed Service Regimes.  but Dealerships / Approved Repairers might well still to this regardless of Fixed Service regimes or Variable.

 

Edited 17 March, 20215 yr by e-Roottoot

Hello all.

The major difference between DADA and DPCA is the turbo.

DPCA has a discharge valve (like on the old 1.4TSI CAXA, CAXB, CAXC). 

Where the excess charged air is bypassed back to the turbo intake for recharge.

This reduces the turbo lag and the turbo stall (for example when engine is at 6000rpm and suddenly the throttle is set to 0%).

It also increases the lifespan of the turbo module.

In the DADA engine the lag and surge are somehow limited by never closing the throttle to 0% when there is a boost.

In this way the excess compressed air is blowed off into the engine, instead of surging the turbo.

The side effect is that the engine RPM fall down slowly.

DPCA:

 

DADA:

By the way : had someone ever mounted a blow off valve on 1.5TSI DADA engine?

To share his thoughts how it behaves (ignore the sound). Does it really decrease the turbo lag on DADA engine ?

I have a DADA and wonder if I mount a BOV...

The biggest problem is where to get vacuum from. I have to drill a stutzer on the intake collector after the throttle body but this will destroy the guarantee.

Some people talk for a "boost tap" for the MAP sensor, but I can't find such for 1.5TSI. There is for 1.4TSI but MAP sensors are different.

With the rest it's an easy job - just take the hose pipe from DPCA engine - it has a 25mm stutzer and get a 25mm BOV and mount it there with a rubber tube.

As I say only the vacuum is a problem and of course we need to know the effect. If there is no effect ...

Any update ?

On 21/12/2021 at 11:13, vnegentsov said:

DPCA:

 

--that pipe is used to help creating the 'venturi' efect in order to work the new generation of the gas vapor purge.

same system like in the newer ea211evo-DXDB.

 

 

 

On 21/12/2021 at 11:13, vnegentsov said:

DADA:

 

So it's not a diverter valve pipe?

On 22/12/2021 at 09:18, vnegentsov said:

By the way : had someone ever mounted a blow off valve on 1.5TSI DADA engine?

To share his thoughts how it behaves (ignore the sound). Does it really decrease the turbo lag on DADA engine ?

I have a DADA and wonder if I mount a BOV...

The biggest problem is where to get vacuum from. I have to drill a stutzer on the intake collector after the throttle body but this will destroy the guarantee.

Some people talk for a "boost tap" for the MAP sensor, but I can't find such for 1.5TSI. There is for 1.4TSI but MAP sensors are different.

With the rest it's an easy job - just take the hose pipe from DPCA engine - it has a 25mm stutzer and get a 25mm BOV and mount it there with a rubber tube.

As I say only the vacuum is a problem and of course we need to know the effect. If there is no effect ...

the max absolute pressure is 2.3bar, so the max relative pressure is 1.3bar. i don't think that a blowoff valve is really needed.  unless you add a hybrid turbo, but please also be aware of exhaust pressure and also differential pressure.

I think your missing op point

Can oil catch can be mounted od doca engine? And vhere to connect? On this hose on valve cover and another hose where?

 

Do you know which 1.5TSI 150 engines have classic turbo and which have variable geometry turbo ?

I think all of them.

Both the dada and dpca are not vnt/vgt turbo. It's only the newer ones and lower powered have them.

Edited 5 December, 20241 yr by Blue8793841

Is there any official info somewhere ?

I know there is DADA engine which is 130hp and it has var.geom. turbo. But the normal DADA and DPC 150hp have normal turbo.

The new DXD engine which my wife has 115hp MHEV has abs. no lag and I think it is var. geom turbo. But how about the DXD 150hp ?

DPCA is 1.5 tsi evo. Also have variable turbo. I have that. Also is is called hibrid turbo. I dont know meaning of that.

Dada is 150 and dpca normal turbo, just electric actuator 

However i can tell i have not any type of lag..

DPCA all original. 83000 kms.

After cleaning intake ports which are full of carbon, i am second owner, i will remap it to 175 hp and 300 Nm.

Look

 

omg.

How will you clean it ?

With dissasembly or via hydrogen clean or other method ?