Burger Tuning JB4 Golf 1.8TSI MQB specific information thread

[ZuMBLe]

Nothing wrong with running Map 2.

 

[goodvibes]

The easy solution seems like Map 2 in the winter and Map 6 in summer. We took the time to fine tune a winter Map 6 so I will use it but it’s not far from Map 2.

Yup. Here's an absolute from last summer. I liked these. Values are in the title.
https://datazap.me/u/goodvibes/11-1...5-145-135-125?log=0&data=1-2-4-11-25-26-27-28

Here's another. At the limit and trims are getting tight. Should be at 50 instead of 45 but no fuel related issue.
https://datazap.me/u/goodvibes/11-13-15-16-17-17-17-17-16-15-14-13?log=0&data=1-4-11-25-26-27

I'd try 11-13-14-15-16-16-16-16-15-14-13-12 and see how that goes for you and if clean try the 1st one posted.

 

[semys_golf]

Hi, could use some help understanding what is wrong with my setup, I feel there is a bit of boost lag when doing pulls, and boost does not reach target sometimes.
The timing looks fine, so I don't think its the fueling

Had the jb4 for a few months and it was flawless but then did an is20 swap on my 1.8t. Initially, there was a boost leak as I broke a pvc pipe while doing the swap, but have since repaired that and the mechanic does not think there are any more leaks.

Pulls done on map 3 on 94 gas on 2nd then 3rd gear (did not max out 2nd):
https://datazap.me/u/vwgolf/map-3-is20-0?log=0&data=1-3-4-11-15-26

Pretty new to this and would really appreciate some insight from yall.

 

[goodvibes]

I'd look at the IS20. Not familiar with exactly what that's supposed to look like but I'm sure 2 psi max add is wrong. It appears to me more like a boost issue than a JB4 one. I'd double check for more leaks, stuck valve etc. I think you're likely in the wrong thread for help on your low boost issue but you could always run map 0. May not tell you much since you are able to achieve ECU boost levels and the ECU is likely capable of compensating an issue to get there. If it were me, I'd clear codes, run map 0 and then check codes and log.

 

[Kenjeet]

Hey guys,

I installed my JB4 unit around September of 2020. I had no problems up until about 2 weeks ago. I did a road trip that amounted to about 750 miles. Before my return, the CEL came on and put my car into EPC mode. I cleared the codes, made it home, and now the CEL/EPC continues to come back. I have attached my OBDEleven screenshot of the faults. They are P019200 and P023700, or "Fuel Rail Pressure Sensor "A" Circuit" and "Turbocharger Boost Sensor (A) Circuit." Any help or advice is greatly appreciated as I need to pass emissions ASAP. The BT connection on the JB4 is quite finicky so it makes it challenging to connect using the app. If possible, I'd love to keep the JB4 attached but if I must do stuff inside the app, I'm afraid I may just need to disconnect the entire unit to get my ECU to stop freaking out.

 

[goodvibes]

Check your connections and that your cables didn't get stressed by engine movement.

 

[Kenjeet]

Check your connections and that your cables didn't get stressed by engine movement.

As far as I know, they are all okay. The cable sheath didn't look damaged in any spots and I didn't see any loose wiring.

 

[goodvibes]

if it's recent FW, have you pulled the OBD plug which should default it to map 0 to see if that corrects it? Have you updated the FW and maybe used the wrong file? Any more to the story?

 

[semys_golf]

I'd look at the IS20. Not familiar with exactly what that's supposed to look like but I'm sure 2 psi max add is wrong. It appears to me more like a boost issue than a JB4 one. I'd double check for more leaks, stuck valve etc. I think you're likely in the wrong thread for help on your low boost issue but you could always run map 0. May not tell you much since you are able to achieve ECU boost levels and the ECU is likely capable of compensating an issue to get there. If it were me, I'd clear codes, run map 0 and then check codes and log.

Thanks cleared codes (turbocharger under boost error) and did another run on map 0. I think I will also ask on the is20 swap thread.

https://datazap.me/u/vwgolf/map-0-is20?log=0&data=1-4-11-15-18-25

 

[Kenjeet]

if it's recent FW, have you pulled the OBD plug which should default it to map 0 to see if that corrects it? Have you updated the FW and maybe used the wrong file? Any more to the story?

Seeing if I have a FW update right now. I'm going to run it in map 0 to see if that helps. I did pull these 2 codes from the app.

 

[goodvibes]

Seeing if I have a FW update right now. I'm going to run it in map 0 to see if that helps. I did pull these 2 codes from the app. View attachment 214348

https://drive.google.com/file/d/1C7...US8iVmSITQjNiuZ3e4Rhy7tfzHFDPzWgY87uXXsjm1kvc

 

[ghost101101]

Here are the latest summer logs:

2-3-4-4.5-4.5-4.5-4.5-5-5-5-4-3
https://datazap.me/u/mattcarr/2-3-4-45-45-45-45-5-5-5-4-3?log=0&data=1-4-11-15-25-26-27

11-13-14-14.5-15-15-15-15-14-13-12-11
https://datazap.me/u/mattcarr/11-13-14-145-15-15-15-15-14-13-12-11?log=0&data=1-4-11-15-25-26-27

11-13-14-15-16-16-16-16-15-14-13-12
https://datazap.me/u/mattcarr/11-13-14-15-16-16-16-16-15-14-13-12?log=0&data=1-4-11-15-25-26-27

11-13-14.5-15.5-16.5-16.5-16.5-16.5-15.5-14.5-13.5-12.5
https://datazap.me/u/mattcarr/11-13...155-145-135-125?log=0&data=1-4-11-15-25-26-27

 

[goodvibes]

I'd do more runs with the 2nd and 3rd and see how they log. #4 is not benefitting your power and on the edge.
Here's one of mine from last summer. This was stock jb4 fol of 45.
11-13-14.5-15.5-16.5-16.5-16.5-16.5-15.5-14.5-13.5-12.5
https://datazap.me/u/goodvibes/11-1...155-145-135-125?log=0&data=1-4-11-25-26-27-28
I'm currently on your map #3 that I suspect I recommended with FOL 50 (not needed) but haven't logged it this year. At this point it's about gas quality and minor variations in vehicles. I might leave it and try bumping 4500 by 0.5 psi to 16.5 to try and even out the boost curve

 

[Joe_Mama]

Honestly I'm happy with Map 2. It hits 14.5 psi easily and smoothly

 

[Kenjeet]

https://drive.google.com/file/d/1C7...US8iVmSITQjNiuZ3e4Rhy7tfzHFDPzWgY87uXXsjm1kvc

3ABB: Fuel rail pressure circuit - low input
3B6D: Boost Sensor - low input

How do you suggest I remedy these codes? Do I need to mess with the FOL?

I'd like to add that my JB4 issues have seemed to vanish (for now). I've been able to drive around for 150ish miles after resetting codes with no EPC or CEL.