NefMoto

Hi,
 Ihave located my VVT data on my 3.2 VR6 BUB.. BUT...  When i paste the adress for my Einlass and Auslass camshaft map the data is just radom and scattered all over the map... I know that i have the correct adress and so on but i doesnt seem as TunePro can display VVT data :(   I have also tried to swap X and Y axis data but no sucsess?   I am manually entering the cam axis data in the XDF settings.

Help i apriciated..

Sounds like you didn't actually locate it correctly that's all.

Agreed. You clearly have the map location wrong. Not sure why you are blaming tuner pro

 ??? I must be blind..

WinOLS

8 bit map?

Its set to 16bit with LSB First (LoHI) in OLS, but not in your XDF...

Very very wierd.. if I change the adress to "0xF2379" all data seems to jump into place but the the map is slightly of target?  Also needed to change to 16bit

Sucsess.. I think this will do...  Now to the next step..   Remake those bastards more suited for boost...

One more time - 16 bit maps will ALWAYS be word (2 byte) aligned (even address). 0xF2379 is odd.

Okey thanks :)  Noticed that...  Dowloaded new cam data... but hmmm..  Is there any thread about VVt here on the forum.. i really need to disable overlap..

On the 1.8t you set CDNWS to 0 and unplug the VVT(resistor it)...

Ok but isnt it just easy to set whole map to 0 advance/retard ?

http://nefariousmotorsports.com/forum/index.php?topic=3855.0

http://nefariousmotorsports.com/forum/index.php?topic=9253.0

working on this myself right now

I've worked through this issue already in mE7.1.1

Depending on whether you have cam timing on the intake or intake/exhaust there will be 1 or 2 sets of maps that I will describe below.

The first type will be a 16x18 where the map axes are included right above (i.e. a Bosch type) Consider this a 'Main' map (this map will be a 8x12 on a 3.0 AVK V6)

Then you have 2 more sets (4 total) of 8x16 maps which are the ones that actually shape the curves (they are 'warm-up' and 'knocking inlet' respectively).

In order to shape the cam timing, ALL 5 MAPS IN EACH SET NEED TO HAVE SIMILAR CURVES. You cannot change the cam timing by just changing the 'main' 16x18 map. It will have a minor effect, but the 8x16 maps are the ones that actually form the curve, I suspect that the 16x18 map is only there for the 8x16 map values to be interpolated through and smoothed out.

Also, the axes for the 16x8 maps are not in the same location, they are in another location with a bunch of other 16 bit axes. You WILL need a DAMOS to figure out the locations. Even if you have a similar DAMOS, you can super-impose them and the map axes locations will be similar for all ME 7.1.1 vehicles.

Incidently I have verified this on both my 3.0 AVK and 4.2 S4, neither of which had DAMOS files, but the superimposition method worked.

Which ECU do you have, I can try and find a DAMOS for it as I literally have about 5 gigs of them collected.

I already have the DAMOS for my Me7.1.1  I am looking at the VVT maps right now. I have 4 maps of intresst.  There is 2 Maps for in/ex-cam (Basis cam winkel) and 2 Maps in/ex-cam for normal duty.  My plan is to first edit the VVT-Maps for warm engine.  First i will set all to 0" just to test. Then i will make a map where no overlapp takes place. I think im going to retard cams on low rpm and slowly move both cams togheter towards advancing them..  What do you guys think?


Ohh and what about KFZW1 and KFZW2    (is these ign @ retarded cam and @ advanced cam? Or can i just do one ing curve for all maps and copy paste?)

Correct, those would be the 6x18 maps I was referring to.

I found it worked best when I made the 16x18 map similar to the four 8x16 map that you are changing.

As for KFZW1 and KFZW2, I just started with the stock curves and added timing as I went along. So in other words, I kept the same fundamental shapes and then added timing to that shape in the areas where I could sustain it.

Since i run turbo i keep the shape of the standard curves and retard ignition in high load areas.. I just discovered that my old ign was just copy pasted for all areas despite advanced cam or retarded cam.. hmm doesnt seem correct.. As an example In a BMW ECU MS41.0 with vanos i can se they have: "Ign advanced VVT" and "Ign retarded VVT"..   

Now im a bit confused.. Lets say that I set all VVT map points to "0".. Then there will be no advance/retad right?  Then it would be more correct to use same timing in KFZW1 and KFZW2?

The first important thing is to reduce the overlap between the cams when running high boost.

Image for discussion and illustration on boosted applications.

From the internet:
"Typically an an advanced exhaust cam combined with retarded intake cam will provide the best results on a supercharged car, especially with a restrictive exhaust."

This means to me that I should remove all overlap and slightly advance EXH cam and retard INT cam as a start to get better spool in low RPM area when running a larger turbo. But when RPM climbs up to the highr RPM area i retard the Exhaust cam more and more as RPM climbs.





Link:
http://horsepowercalculators.net/supercharger-power-parts/supercharger-tuning-through-cam-selection-and-cam-timing