NefMoto

Hi guys,

I've installed ADR intake camshaft and GT2871 in my AUQ engine and obviously I tuned the ECU. According to my previous experience I changed camshaft overlap settings as following. Int: 1.0mm Ext: 0.7mm. To tell the truth I'm satisfied how the engine works and how much power it has but as always I want more power :)

So the main question is: does anyone has log files with non stock camshaft settings for stock or NA camshafts?

PS the spool is a little late at about 4000 rpm and I want to try reducing overlapping maybe I'll find more earlier the spool with the same power at high-end rpm area.

My logfile is attached.

Regards.

Camshaft settings? In what way

also interested in this

I do this moslty only on naturally aspirated engines, there is much potential if they were restricted because of emission-standards (nox-reducing), e.g. by internal Egr-Functions, or throttling to get more difference to a following model.

My favorite example is the A8 D2 6.0 W12... Ori 420Hp, after reworking, removing Egr, and more.... 490Hp (no joke), still not the limit, but safe.
Customer(good friend) was more than happy. Called me in the middle of the night to tell me that the car run like never before and new rs5 got no chance :)

What addresses in the map did you tweak? I also have the AUQ

just get 2.8 cams and call it a day. The 2.8 cams have more duration and opening. Then just drill the cam sensors  mounting ears and clock the sensors.



Lee

I take it by 2.8 you mean the 2.8 v6 engine?

AUQ is a 4 cylinder 1.8

Oh crap I messed that one up. Sorry ... for some reason I had the 2.7th in my head. Just ignore the info I put up above

Lee

1...The easy way for the 1.8t is to get a 16 valve adjustable cam gear and drill out the mounting ears on the cam shaft sensor so you fool the computer.

2....or learn the computer and properly adjust the cam shaft that way.

3.. do the research and find which 1.8t engines have the performance cams from the factory all ready

4. Buy performance cams and spend a lot of cash


Lee

The AUQ has VVT from the factory and it can be tuned to deliver more power over the rev range. Just never come across someone who has done it. The OP seems to be on the right track tho

Everything I've read says the vvt on the auk is only swung for emissions, but interested if you could use it for torque, if I get a clear day I'll log my rtech auq and see what they do with the cam angle, as that's a very torquey map.

I believe rtech offer a map that uses the vvt for performance and not emissions. In standard form the vvt is used during cold starts only but can be utilised

What exactly do you want to know? I adjusted camshafts overlapping with special tools. You can see it here http://postimg.org/gallery/39ygwnooc/

Have you tried to play with VVT? I've tried but this didn't give any reasonable results with my current overlap settings. And I came to a conclusion that VVT should be disabled.

According to ME7.5 manual VVT is used during cold start only for cat warming.

Dave87VRS, what spec your engine has? I mean - turbo, portings etc.

Dan has played with this too.

I've allowed overlap until the turbo spools and then kills it back off once it's spooled, there's a massive thread on it.

http://nefariousmotorsports.com/forum/index.php?topic=2102.0

In my opinion:
On turbocharged engines it makes no sense, only in the range the range the turbo makes no/ or small boost.

Its a misbelief that you need overlapping on charged engine, because the pressure in the manifold will in case of overlapping press fresh air into the exhaust and thats not what you want (only if you want to cool down your exhaust/turbo), you want it in the engine, to get good efficiency.
Let the exhaust valve close at TDC (not before, because you have old exhaust gases in you engine<- internal egr) and open the inlet Valve directly after. Only on small pressure or low volume flow you can make a small overlapping.

Its an other way on noncharged engines, there you can use overlapping to get more air in the engine, but also can make internal egr with it, if you make the overlapping in a wide range, or much before tdc.

Still running ko3s. I misread your first post. I thought you had managed to activate the vvt for a performance increase.

Your correct in saying its used for cold starts only however it can and has been utilized for performance gains.

What turbo do you use? How much turbo spool was increased with overlapped settings?

I'm also pretty sure if you increase camshaft overlapping you move torque peak at higher rpm range. That is the main reason for this adjustment in my opinion.

BTW: does anyone know stock camshaft overlapping settings for AGU, AUQ and BAM engines?

On naturally aspirated engines I agree.
But I think on turbocharged engine´s I think you shoot to much air in the Exhaust.
Your Maf-readings go wrong, because you have less air in engine, then measured, and the turbo has to spin lot more to get the same boost, and in this case it will die if you drive the same boost-pressure than before, that are my thought´s to this...

What do you mean?

With VVT active its around 23 degrees open and when not active its around 1 degree,

If a compressor is making enough psi/flow to overcome what it takes to drive the the turbine (that drives the compressor), wouldnt that be like one of those free energy contraptions  :o

The best solution to solve over discussion is return back stock camshaft settings and create several log sessions :)

It is 23 and 1 degrees in addition to default settings. But I can't find how much is default camshaft overlapping settings for these engines. I believe it should be about int: 0,5mm and ext: 0,3mm.

Tfsi the inlet can be used to make the engine sing and dance reduce dynamic cr aid spooling move kr windows ect, not much on the 1.8t just can use it to aid spooling. Not like the JBS claim of 40hp gains from vvt attack.  :o

The vvt on k04 cars is for spool etc and only emissions on k03 as std.  The change point can be changed but it can't be altered incrementally sadly.  I have thought of using a vvt mechanism from an alt engine to see if it's adjustable like a tfsi one as they mechanically look the same

Run on dyno with vvt active all time
Then run on dyno again with vvt deactivated.

Where the lines cross is where you should have the change over point.

Only really moves with cams and/or intake/exhaust manifold changes

They will cross at 5252. Some cars like it later depending on spec

re reading this. Do you mean where they cross with runs overlayed