Grundanpassungskonstante would be re-calculated as a linear mult.

Original injectors are 210cc @ 3 bar, fuel pressure is 4 bar.
If you fit 440cc @ 3 bar injectors with 4 bar, then grundanpassungskonstante will be (210/440)*128 = 61.

If you change fuel pressure as well, you will have to take it in account before re-calculating.
As I said before, remember to adjust latency and minimum injection time.

@ prj :

Can you tell me which screenshot applies to your calculation ? I get the feeling that screenshot nr. 1 is the correct one...

Thanks.

Thanks for the confirmation.

I already had the idea that there was a mix-up

Cheers,

PvL

Giannis: Here we go;

Bosch/vw numbers for the maf :

0280217504 - 021906462
0280217512 - 021906462A
0986280203 - 021906462A / 021906462AX

I did some research on the vr6 software that works with this maf (m3.8.1 euro VR6'es & M5.9 usa VR6'es) and the maf-map in the
software is identical. But ofcourse there is a difference with the 1.8T callibrated maf-map. Picture shows both vr6 locations in the
software.

I'll also include a damos from the euro-file, and a tuned usa file so you can do some homework on that.

I also want to put this maf on my car, and upgrade the turbocharger to a K04-022.  If anyone has extra info on this matter, do chime-in please.

thanks,

PvL

@ PRJ / Nokiafix /other forum-members who have proper knowledge/experiënce with this :

"You will need a VR6 MAF, take the linearization maps from a VR6 ECU and copy paste" -> are the VR6-files i've posted, the ones you mean
to copy the maf-map out ? as they are properly different if compared to a AEB or AGU ecu-map... Can you give me a extra hint or
example-file/screenshot ?

How to properly set the MAF up? : swap to VR6 housing + 1.8T stock 150bhp sensor? Or keep the VR6 sensor in the VR6-housing ?

Thanks,

PvL

Missed a bit cannot edit above post..   lol


When tuning m3.8 at any stage its best to use a known working OEM maf sensor in a bigger housing.  I have been caught out in the past trying to scale and set fuel/load and timing on a 12 year old Vr6 maf which a customer supplied..... which was a naff as Top Gear last night .  That week I ripped all my hair out...

Just a lot of logging and in most case I keep all load axis stock and edit the maps. 
 
The best way to start would be fit MAF and injectors set TVUB based on Bosch data sheet and reduce min start injection 1x1s. This is enough to get the car starting hot and cold without soiling your spark plugs/flooding engine. Then work on part throttle map as a whole % rescale to get your idle fuel trims about right. With n75 unplugged drive car on light load logging via VDCS and edit points on part load lambda map unti you get close on to the fuel stratergy you after.   Reduce timing maps over 2000rpm by around 5*. 

 Then run car with the stock N75 and load maps and log to get a picture of whats going on and make sure the ecu has control of the base line boost and its safe.  Then start by tuning the LDR map as a whole % you might have to take out some midrange load ms to make the power linear for the bigger turbo as the k03 maps as for max load around 3200rpm then tails off.  Set you self a basic torque curve at lowest boost u can get (hard without dyno) but on the road just set it based on boost gauge reading and blocks 025 via vcds.

 Once you got torque curve/boost profile contolled how you want as basic power then the LDR maps become very easy to alter/tune for final power.     Now is just a matter log winding the timing up and logging load,  actual timing and timing corrections to get a base maps which is safe and controlled.

Now its just the case of adding small % gains to the LDR maps and working up in load to target torque curve., while logging and making corrections to lambda and timing maps which will relate to actual load ms logs.

It takes a lot of time to get right, I tend to spend a 2-3hours a day over a week to do a big turbo map for an AGU, I always start from scratch using a stock factory map.   I aint the best person to explain things so I hope you can get your head around it.

Nick

Yes.