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BMS VW GTI JB4 info thread

ZuMBLe

Autocross Champion
Location
NY
Car(s)
Alltrack 6MT
I ran a new log, I hope this one is more useful. It was mid 70s. I tried to run 3rd 2500 RPM to 4th. Looks like I didn't quite floor it but I got close?

https://datazap.me/u/bigcanoe/log-1632485781?log=1&data=1-4-5

Not a good log cuz your pedal pulled back a lot after 5000, but under 5000 looks good. I think it's best to get a full log where you have the pedal down the whole time. The throttle is open, but the pedal position controls torque request (how much boost the car wants to run).
 

RN_MK7.5R

New member
Location
Bloemfontein
Car(s)
2017 MK7.5R DSG

BigCanoe

Go Kart Newbie
Location
Moncure, NC
Car(s)
2017 GTI SE DSG
Not a good log cuz your pedal pulled back a lot after 5000, but under 5000 looks good. I think it's best to get a full log where you have the pedal down the whole time. The throttle is open, but the pedal position controls torque request (how much boost the car wants to run).
I am definitely struggling to keep WOT on the curvy backroads, may have to find a highway. Thanks for taking a look!
 

RN_MK7.5R

New member
Location
Bloemfontein
Car(s)
2017 MK7.5R DSG
Hey guys, just joined the forum, got my car about a month ago.

I have a question regarding JB4 stacking onto APR ECU file,

I ran logs on map 1 and 2 ont top of the ecu file, but I need help to check if everything is ok and if I have to do a custom map 6 would anyone be able to help me?

Below are two logs, map 1 stacked and map 2 stacked on the APR file, both runs on 98octane.

https://datazap.me/u/rnmk75r/apr-stage-1-jb4-map-1-stack

https://datazap.me/u/rnmk75r/apr-stage-1-jb4-map-2-stack
Also It shows meth running at 100 but I definitely don’t have meth on the car
 

ZuMBLe

Autocross Champion
Location
NY
Car(s)
Alltrack 6MT
Hey guys, just joined the forum, got my car about a month ago.

I have a question regarding JB4 stacking onto APR ECU file,

I ran logs on map 1 and 2 ont top of the ecu file, but I need help to check if everything is ok and if I have to do a custom map 6 would anyone be able to help me?

Below are two logs, map 1 stacked and map 2 stacked on the APR file, both runs on 98octane.

https://datazap.me/u/rnmk75r/apr-stage-1-jb4-map-1-stack

https://datazap.me/u/rnmk75r/apr-stage-1-jb4-map-2-stack
These are good looking logs. Map 2 looks good. Do you have your AFR wire tapped?

Try this:

FOL: 50

1500-2.0
2000-3.0
2500-3.0
3000-3.0
3500-3.0
4000-4.0
4500-5.0
5000-5.0
5500-6.5
6000-7.0
6500-6.0
7000-4.0
 

RN_MK7.5R

New member
Location
Bloemfontein
Car(s)
2017 MK7.5R DSG
Are thes
These are good looking logs. Map 2 looks good. Do you have your AFR wire tapped?

Try this:

FOL: 50

1500-2.0
2000-3.0
2500-3.0
3000-3.0
3500-3.0
4000-4.0
4500-5.0
5000-5.0
5500-6.5
6000-7.0
6500-6.0
7000-4.0
Are these the only parameters I should change on map 6 and leave alll the other things on 0?
 

ZuMBLe

Autocross Champion
Location
NY
Car(s)
Alltrack 6MT
Are thes

Are these the only parameters I should change on map 6 and leave alll the other things on 0?

These are the values you should put in to the MAP 6 values. I believe you have the FUEL BIAS at 100 right now, keep it there for now. Duty Bias should be all zero. Boost safety set to 29.
 

RN_MK7.5R

New member
Location
Bloemfontein
Car(s)
2017 MK7.5R DSG
T
These are the values you should put in to the MAP 6 values. I believe you have the FUEL BIAS at 100 right now, keep it there for now. Duty Bias should be all zero. Boost safety set to 29.
Thanx I really appreciate it, will check it tomorrow and run a log, will then upload again, just have a question on the AFR, is it running too rich on map 2?

and yes I did tap the red wire on the O2 harness with a posi tap
 

ZuMBLe

Autocross Champion
Location
NY
Car(s)
Alltrack 6MT
I'm pretty sure it's running rich because you have the FUEL BIAS set to 100 when it should be zero for a flashed car. Maybe before you make any map 6 changes, set the fuel bias to 0s and then run another log.
 

RN_MK7.5R

New member
Location
Bloemfontein
Car(s)
2017 MK7.5R DSG
Ok
Do a Map 1, but change your fuel bias to 0 down the column.
Ok so here is a log of map 6 stacked on my apr file

https://datazap.me/u/rnmk75r/map-6

Settings:

Boost
1500 - 0
2000 - 0
2500 - 4.0
3000 - 4.5
3500 - 5.0
4000 - 5.5
4500 - 6.0
5000 - 7.0
5500 - 7.0
6000 - 6.5
6500 - 3.0
7000 - 2.0

Fuel Bias
3000 - 5
3500 - 5
4000 - 7
4500 - 7
5000 - 8
5500 - 7
6000 - 5
6500 - 2
7000 - 2

Boost safety - 31.9
Auto shift boost redux - 55
FOL - 30
 

ZuMBLe

Autocross Champion
Location
NY
Car(s)
Alltrack 6MT
Ok

Ok so here is a log of map 6 stacked on my apr file

https://datazap.me/u/rnmk75r/map-6

Settings:

Boost
1500 - 0
2000 - 0
2500 - 4.0
3000 - 4.5
3500 - 5.0
4000 - 5.5
4500 - 6.0
5000 - 7.0
5500 - 7.0
6000 - 6.5
6500 - 3.0
7000 - 2.0

Fuel Bias
3000 - 5
3500 - 5
4000 - 7
4500 - 7
5000 - 8
5500 - 7
6000 - 5
6500 - 2
7000 - 2

Boost safety - 31.9
Auto shift boost redux - 55
FOL - 30

Where did you get those fuel bias values from? Haha. No matter, it proves the fueling is helping. Make all the fuel bias values 50. Log it again. Lower that boost limit to 29.

How did the new boost values feel?
 
Last edited:

RN_MK7.5R

New member
Location
Bloemfontein
Car(s)
2017 MK7.5R DSG
Where did you get those fuel bias values from? Haha. No matter, it proves the fueling is helping. Make all the fuel bias values 50. Log it again. Lower that boost limit to 29.

How did the new boost values feel?
Can definitely feel the car is pulling harder, the fastest draggy I have done on just apr map was 12.39 @ 174km/h at 12°C, with the new values I did a 12.26 @ 177km/h bur it was 26°C. 0-100 was 4.11sec

the fuel values I got from me just trying to keep the AFR as close to 12.0 as possible.

What does the fuel bias do at 50?
 
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