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JB4 Logging, stacking and Map 6 Discussion

ChrisMk77

Autocross Champion
Location
Sweden
Car(s)
2018 GTI Performance
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?
Post log on Datazap and link here and make sure everything is hooked up correct.

Have you set all fuel bias to 100 and FOL to 50?
 

OrangeAlloy

New member
Post log on Datazap and link here and make sure everything is hooked up correct.

Have you set all fuel bias to 100 and FOL to 50?
Here's the link: https://datazap.me/u/kimberlingbrian/jb4-mk7-gti-92-octane-no-mods?log=0&data=1-4

I realized after looking at the data zap that I may have been wrong, I'm a bit color blind so I could be confusing lines on the Jb4 graphs. I didn't realize that I need to manually sent fule bias and FOL for pre-set maps, are those values the same on both map 1 and 2?
 
Last edited:

ChrisMk77

Autocross Champion
Location
Sweden
Car(s)
2018 GTI Performance
I didn't realize that I need to manually sent fule bias and FOL for present maps, are those values the same on both map 1 and 2?
Yes fuel bias and FOL are affecting all maps, FOL seems to be set at 40 now that is fine on map1 and all fuel bias are set to 100.

Log looks ok maybe some TC interference, ecu_psi is spikey in 3rd. Next log rev it out to 6500.
 

OrangeAlloy

New member
I updated the FOL to 50 and did another run. Here's the log, I ran out of space so I had to back out of 4th but third is all there.

Fogot to mention, I went full throttle and used the kick down this time.

If this looks good my intention is to jump to map 2 next. Thank you guys so much for the help!

https://datazap.me/u/kimberlingbrian/mk7-gti-jb4-map-1-92-octane-kick-down-activated?log=0&data=1-4
 

crxgator

Autocross Champion
Location
Raleigh, NC
Car(s)
All the MQBs
Finally did a run i the A3 tonight. 93 octane, airbox mods, BMS TIP.

https://datazap.me/u/crxgator/log-1580356409?log=0&data=1
1BEBC22F-10CD-46C6-89B1-F9B7178024FD.png
 

crxgator

Autocross Champion
Location
Raleigh, NC
Car(s)
All the MQBs
Thanks. Looks like I can increase it a bit. I’ll probably do the downpipe shorty.
 

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