Hi,

I am editing (for a first time), my ECU file from my VW Golf 1.9 TDI,
and I have almost finished it.

The only map that I can't find is
IQ Limited by MAF ( Mass of Air Flow ).

I have seen these map in other files with axes
Mass of Air Flow ( 300 - 1000/1100 ) and RPM ( 861 - 5000 )
and values rising from 13 to 60/70 ( IQ ).

In my file, I have found few 13x16 maps with these axes
but the values don't look like IQ - MAF Limiter.

Please help, thank you.

I have attached my original ECU file ( or what I have found in my ECU )

1D3D9C 10x16 - Smoke Limiter - MAF (Airflow vs. RPM) --> in your case NOT USED...it is limited to 10.
Factor 0,01

After that map there is Smoke Limiter - MAP 12x16 address 1D4058
Factor 0,01 Boost pressure vs RPM and that one IS USED.

file in your maps iq limitation according to the maf work in lambda function ....
that is, the output value of the maps in question based on the MAF and Lambda ... a title to increase iq must lower these maps ...
that your files are in: 0x1D4540, 01xD471E, 01XD48FC

Great, I really didn't expected to get reply so quickly :)
On the other side, this modifying is no so easy as I thought.

I started with VAGEDCSuite v1.3.9.0, but I wasn't able to found two SVBL values in file.
Now I am trying that with WinOLS 1.721.

I have modified:
- Boost Limiter (1996648) RPM x ATM -> Boost max 2200 > 2340 @(800-1050mbar) +6.4%, @750mbar +2.85%
- Smoke Limiter (1917016) RPM x Boost -> IQ @2000mbar: 50 -> 55
- Torque Limiter (1909762) RPM x ATM -> IQ +12% (2000-4500rpm), +1% @1250, +2%@1500, +9%@1750, +10%@1900

- Turbo map (0x 001E75FA) RPM x IQ : RPM>= 1260 : +4.44% @2500rpm, +8.34% @3000, +9.27% @ 3500, 4000rpm, + 9.81% @ 4500
- Turbo map (0x 001E7480) very similar % changes

- Drivers Wish (7 maps) (1844984 - 1847036) Throttle 80, 100% > +9% IQ
- IQ to Torque conversion (1920654)
- unknown map ( 0x 001C2338 ) dozen of pairs of 2xxx, 3xxx +9% ( look like IQ limiters )
***** I need an explanation what is this map, I saw this map in some tuned files and did similar modifications to it, without understanding it :(

- need now to understand Lambda maps, and change them too ( instead of IQ Limiter by MAF )
----------------------------
So few questions more:
- SVBL locations ?
- Idle control location ?
- 0x 001C2338 map explanation ?
- More ECU editing software ?
- Theoretical: what is better ? Same amount of fuel: 2.2bar 20AFR or 2.0bar 18AFR or 1.9bar 17AFR ?

Hi,
i suggest that you get rid of percent tuning :oops: , and start finding correct units, offsets and factors,
take your time to achieve good quality step by step.

Everyone tune with percents and that is just wrong.

Then you check the hardware and tune it with real values not with percents...

Sample:

Check the turbo manufacturer specification and you see how far you can go.
Than you know how much boost you can add in which area and not in percents...

Percent tuning is not tuning it is crap and that crap is being sold...just not right.
Thats why people are doing tunes for 50€ and for that money you get crap - percent tuning,
for real tune you will have to pay A LOT more.

SVBL location in your file is after
Boost Limiter - Atmospheric Pressure:

1E78B2
factor: 0,001000
offset: -1

About lambda:

The ideal ratio of air and fuel means 1,
lower value is richer mixture, higher value is more lean mixture.

So if you lower the lambda you get more power, but if you go to far you get smoke,
which is not desired...

quote ... the reasoning makes a fold ...
Map of iq nm not edit it first ... why do you need it for a drive levels according to standard because if you touch I have not yet figured out why you have a message to your error from the ECU with its light on ...
SVBL are set by the original 1750 mbar ...
you do not need to touch them ... and are located immediately after the turbo pressure maps ...

Thank you,

yes, I found SVBL at 0x1E78B2, and have changed it from 2350 to 2420 mbar.

Can you tell me what is the use / meaning of map at 0x001C23DC (14x25) ?

domangez wrote:Thank you,

yes, I found SVBL at 0x1E78B2, and have changed it from 2350 to 2420 mbar.

Can you tell me what is the use / meaning of map at 0x001C23DC (14x25) ?

domangez you are welcome,
yes that is correct, SVBL in your file is at address i wrote you and it is 2350mBar (1.35bar boost),
for the question about the map you are looking for, please post correct address and i will take a look that as well.

I am posting you factors and offsets and i see you do not use them,
when you locate the map enter those, it is very important also.

cheers