Probably the most commonly known difference is the Gasoline Particulate Filters, where as part of emissions, WLTC the whole behaviour of the engine has been changed.

DNWA keep more pressure inside the engine, using a vacuum line for the wastegate while keeping the wastegate normally open, whereas, DAZA use old school pressure line
and normally close wastegate.
Generally,
1- engines with restricted exhaust run more boost to produce the same power, and
2- they use more fuel on cold starts to warm the cat and filters!?
3- keep wastegate open for a faster warmup cycle !?
4- Have a better midrange power band until the point the back pressure gets high and make the ECU
back off on the boost and lose the top end.
5- questionable low end as the dyno graphs/ drag race is not real word samples,
Dyno is a WOT (wide open throttle) measurement as a certain RPM (don't go into details ). Hence, no one would choke the engine on 2000RPM flat out.
6- Better crankcase ventilation
7- more?

 

From Left to right 1- De-cat, 2- DNWA, 3- DAZA, 4-CEPA? or early DAZA?

courtesy of

The back box on DNWA is almost straight, and the resonator is more decorative than functional.
The max noise gain by the back box is 15%, as most of the noise is muffled by filters and engine management.
Engine management not only limited the timing but also closed valves.




DAZA, note inside of resonator and back backbox

Early hunch on facebook groups

Actual photo for DAZA, there should be a gap on the end of welded pip

DAZA wide open

DNWAwide open

Decorative resonators on DNWA

Lastly, the Akrapovic, almost DNWA on open valve

 

Also injectors should be different, DNWA ones have higher flow (afaik)

 

Yep, DNWA runs higher pressure.

 

Very interesting topic, found this vid which is informative - just watch out for bully! 🐶

 

Very interesting topic, found this vid which is informative - just watch out for bully! 🐶

Just to clarify
Thas DNWC not DNWA

DNWC apparently have a harder ECU for coding and tuning. wiring is not the same DNWA, so retrograding would be an issue unless it is already done ?

 

curious to know if the DAZA camshaft is plug&play on the DNWA...

 

As far as I know, it should be, I saw people do it.
If you plan to do a drag race, it would benefit the need for high-end. if you are doing daily DNWA have a better mid , turbo spool faster and have a better lunch.
I never did data logging, but I think DAZA camshaft would help to make more power with the same boost, hence more lift and duration.

https://kelfordcams.com/audi-rs3-daza

 

 

Exhaust camshafts are not only physically different, but they also have different tuning times.

 

Are you TTRS guys now adding the transfer box to your servicing regime?
It is now part of the 8Y service.

Also, did any of you see this? DAZA's go POP

 

That is what happens when they do R&D on people's cars.
Tune to last isn't the same as fetching numbers for 30-second WOT on dyno.

 

I've always edged on the side of caution when it comes to tunning turbo's.

It's fine for those chaps that have plenty of money to play with. They know the risks of development, but chasing the numbers is fun and the car is their toy. I've seen so many young chaps stretch to get a car and then get sucked into stretching more to tune it. When things go wrong they're totally stuffed.

 

What a great thread. Very interesting

 

Any mods will add more stress to your engine, it's all about adding safety features to protect it and preventative measures to reduce that stress, once you have tuned it. That's where so many go wrong and get swayed by the devil whispering in their ears 'Must have more power, more boost, more torque' etc. Adding stronger parts like forged rods & pistons is a must, but it's more important to control the extra heat generated by your shiny new tuning parts! 🚗💨

Have a look at these Kelford cams;
Kelford Cams

 

I am not sure if it's a rumour or not, I heard "new engines use good old DAZA camshafts".

 

'heard' from whom/where?
and what do you mean exactly for "new engines"?

 

That's very interesting indeed, those kelford cams look very impressive for-sure, if they deliver the extra 100Hp as claimed in that video I shared.

 

100 hp just because of a more extreme camshaft profile seems a bit too optimistic to me...

anyway, does anybody know the DAZA camshaft part number?

 

I had actually seen the video (maybe not too closely?)

 

thanks, will try to source it.. I guess a map slight adjustment will be necessary...