Why does the 8V A3 make so much more power than our engine?

**AudiSport44** · 05-24-2020 07:22 AM

Hello,

I've been searching all over the net for an answer but was unable to find any info.

I'd like to find out why the transverse 2.0T makes more power than the longitudinal 2.0T when flashed. This is true for the K03 variants and K04 variants as well.

Currently running Integrated Engineering stage 2 in my Allroad and would like to go to a K04 because I'm underwhelmed by the power. But even with a K04 it's a disappointing upgrade compared to what you get out of an A3/S3, and GTI/R.

So what is different between the two motors?

**Nano909** · 05-24-2020 07:45 AM

Because they're different engines.

**19birel** · 05-24-2020 08:49 AM

Other than also being a "2.0T" the Gen 3 motor found in the A3/GTI has almost nothing in common with our motors and is actually a variant of what is found in the B9 A4. They also have different turbos

**Theiceman** · 05-24-2020 08:51 AM

Doesn't that engine have variable lift on the intake cam also ??.

Sent from my SM-G973W using Audizine mobile app

**A4 Centaur** · 05-24-2020 08:54 AM

GEN 3 E888 turbo mounts directly to the head, and no more log manifold.

**Smac770** · 05-24-2020 11:54 AM

The EA888 Gen3 in B8.5 (ROW) that came out in 2012 is very much an extension of the EA888 Gen2. It did adopt VVL on the exhaust cam in all profiles (1.8T long. and trans. and 2.0T long. and trans.), which had been on the 2.0T long only for the Gen2. It did add VVT to the exhaust cam. It did integrate the exhaust manifold into the head.

They started to define the implementations a bit with "power classes".
PC 1 included the 166 PS 1.8T CJEB and 177PS 2.0T CNCB in the A4/A5 and the 177 PS 1.8T CJSx in the A3.
PC 2 included the 221 PS 2.0T CNCD in the A4/A5/Q5.
PC 3 included the 296 PS 2.0T CJXC in the S3.
One bullet from the list of PC 3 changes: "Cylinder head with another alloy than other engines of this group, due to the higher thermal stress".

The EA888 Gen3B (aka Gen 3 MLBevo) in the B9 came out ~2016 (go figure). This is when we get the "B cycle" implementation, which has the VVL on the intake cam instead of the exhaust cam.
The PC 1 engine is the 2.0T B cycle engine, which is quite different. It has 188 PS and replaces the prior 1.8T and 2.0T Gen3 PC 1 engines.
The PC 2 engine is just an update of the Gen3 PC 2 engine, with a power bump to 248 PS.
No discussion of the PC 3 engine since there is no EA888 PC 3 in an A4/A5, and that's what SSP 645 is about. I assume the PC 3, like the PC 2, carried over with minor changes.

**AudiSport44** · 05-24-2020 01:15 PM

So the major difference is that the variable cam is on the intake instead of the exhaust side? Do they have forged rods also or any other change to allow for so much more power?

Someone said the turbo is different so let's not focus on that. I'm interested in what is physically different in the block and head.