JB4 Logging, stacking and Map 6 Discussion

[Diggs24]

The MQB7.5 IS38 ECU causes that. Not sure why. You could try running absolute. Input these values for map6 and see if the trims actually move appropriately.

https://datazap.me/u/jambroni/jb4-map-6?log=0&data=1-4
If it doesn't improve I would try my lowered setting until the point that AFR starts targeting an appropriate value (14+ to redline is not appropriate).

 

[Diggs24]

You could also try increasing FOL but that never seems to work on those ECUs.

 

[Jambroni]

The MQB7.5 IS38 ECU causes that. Not sure why. You could try running absolute. Input these values for map6 and see if the trims actually move appropriately.

https://datazap.me/u/jambroni/jb4-map-6?log=0&data=1-4
If it doesn't improve I would try my lowered setting until the point that AFR starts targeting an appropriate value (14+ to redline is not appropriate).

Alright will try tomorrow and post some new logs. Which absolute values should I go with?

 

[Diggs24]

Just take that boost curve you have now and put those in at the 500 rpm increments. Something like this:

1500 17
2000 18
2500 19
3000 20
3500 22
4000 23
4500 23
5000 22
5500 22
6000 21
6500 20
7000 19

 

[Jambroni]

Very helpful, will do that!

 

[Jambroni]

Alright @Diggs24 I put those absolute values in this morning and ran a log. The trims are no longer flat but the car ran like stock more or less, I checked the acceleration time with dragy. Car was up to 90 degrees celcius so it wasn't a cold run.

Anyway, here is the log, let me know what you think:

https://datazap.me/u/jambroni/jb4-map-6-absolute-test-1
Thanks!

 

[Diggs24]

AFR looks a ton better.
Try another 1 psi across the board and see if it will drag boost up any further.
Also set 6CYL timing to 1.

 

[Jambroni]

Will do, cheers!

 

[OrangeAlloy]

I just got my JB4 installed last night on my 2017 gti and and getting some really wierd idle characteristics. Ignition is all over the place. I'm completely stock and running 92 octane. This log was taken on map 1, any ideas?

Also, I added a log of a pull on map 1, seems like the boost is way below target, is there anything there I should be concerned about?

 

[Jambroni]

@Diggs24 New logs. Doesn't seem to reach the target boost anywhere.

https://datazap.me/u/jambroni/jb4-map-6-absolute-test-2
Any ideas?

 

[Diggs24]

No but it's much safer. If you're dying for more boost you can try your old additive map but cap boost at 5 anywhere you have 6.

 

[Diggs24]

See if it will take FOL 50 too.

 

[Jambroni]

Alright thanks, will try FOL 50 as well

 

[Diggs24]

Alright thanks, will try FOL 50 as well

on your additive map. it wont help this absolute map.

 

[Jambroni]

on your additive map. it wont help this absolute map.

Cheers. Trying to learn to read the logs and getting there slowly, not that easy .