Burger Tuning JB4 for Kia Stinger!

[Angel]

I’m hearing Maps 3, 5, and 7 haven’t been fine tuned yet, nor run as consistent or reliable as Map 2; is this true?

I see lots of people run, and talk about, Map 2, but not much of the others; is that the reason?

Not trying to stir the pot, just trying to collect all the information before I purchase; I’ve had the JB4 and BMS Intakes sitting in my cart for the last week.

Lol nice .... I personally ran map 1 and map 2 .... I ran map 3 way back before the new software updates and had minor issues. Maybe it was the gas , the car didn’t like it or maybe was the jb4 at the time on the software that it was on ... not sure but this summer I will be running map 3 at the track with some e30 gas ...

 

[Oryan]

The higher maps require a higher octane and quality of fuel you can't easily find at a pump. Not many places have access to just 100 octane from the pump, only a few gas stations (I've personally only seen one brand do so) or race gas from a track are the only reliable options. So, people are tossing in octane booster of various amounts and/or mixing various amounts of E85 in order to try to get an effective higher octane fuel to run higher maps and that relative inconsistency is showing. I'm either going to run Map 2 or the WMI map with the kit because I'd either run just Shell 93 or Shell 93 with 30/70 WMI, much less hassle IMO.

 

[xot1]

How often do you need to refill with the WMI?

 

[DaBears4Lyfe]

How often do you need to refill with the WMI?

Depends on how much you are using. the JB4 doesnt monitor that does it?

 

[brancky3]

Depends on how much you are using. the JB4 doesnt monitor that does it?

It doesn't monitor how much you have left but as long as you get the WMI integration with JB4 it will revert to a safer map if you run out of WMI.

 

[Terry@BMS]

If you run out WMI flow stops and the JB4 reverts to a lower boost map.

 

[xot1]

If you run out WMI flow stops and the JB4 reverts to a lower boost map.

Good engineering.

 

[Terry@BMS]

Good engineering.

That sort of functionality is required to safely run WMI. That people run kits without it, is crazy, to us.

 

[StungBlueGT2]

That sounds like EWG oscillation from the gain component of the PID output being too high. Harmless but annoying. The fix is a lower boost target in the area where it's oscillating, or direct EWG control, something we're looking in to. If it comes up at part throttle then the FUD.7 bit setting will help as that lowers the part throttle boost target.

Thanks for info. He did try the FUD bit update and it helped a lot, but didn’t resolve it completely.

FYI- It’s definitely worse using part throttle, but boost still fluctuates over 15psi even at full throttle. Just feels like it can’t hold solid boost anymore and is constantly fighting with itself.

If this is just an EWG oscillation from high boost targets wouldn’t everyone using map2+ experience the same fluctuations?

This is only the second log I’ve seen with 1-2psi variations while accelerating so feel it may be a combination of mechanical and the JB4 PID control. Unfortunately using stock boost(map0) it’s not noticeable so unsure how to test if it’s simply the JB4 fighting with the EWG control. However if a few users have the same oscillations then hopefully its just a JB4 setting that can be adjusted.

Is there another fix available that totally eliminates the fluctuations? Or do you have any ETA on the direct EWG control?

Any other suggestions and updates will be greatly appreciated.

 

[STINGER]

If you run out WMI flow stops and the JB4 reverts to a lower boost map.

Just out of curiosity, how does it detect that it stopped flowing, I mean technically what is happening.

 

[Adamdan]

Thanks for info. He did try the FUD bit update and it helped a lot, but didn’t resolve it completely.

FYI- It’s definitely worse using part throttle, but boost still fluctuates over 15psi even at full throttle. Just feels like it can’t hold solid boost anymore and is constantly fighting with itself.

If this is just an EWG oscillation from high boost targets wouldn’t everyone using map2+ experience the same fluctuations?

This is only the second log I’ve seen with 1-2psi variations while accelerating so feel it may be a combination of mechanical and the JB4 PID control. Unfortunately using stock boost(map0) it’s not noticeable so unsure how to test if it’s simply the JB4 fighting with the EWG control. However if a few users have the same oscillations then hopefully its just a JB4 setting that can be adjusted.

Is there another fix available that totally eliminates the fluctuations? Or do you have any ETA on the direct EWG control?

Any other suggestions and updates will be greatly appreciated.

Map 2 on my car feels great. Map 3 in 1-2 gear feels good but power can feel a bit like it fluctuates. If I look at the boost on map 3 on the logs you can see boost is a bit wavy. I think it’s the computer hitting the torque limit for 1-2 gear and is pulling boost. 3rd gear runs the full 16-17psi and it smoothed out but 1-2 gear don’t seem to like it over 15-16 psi.

 

[Angel]

I

Map 2 on my car feels great. Map 3 in 1-2 gear feels good but power can feel a bit like it fluctuates. If I look at the boost on map 3 on the logs you can see boost is a bit wavy. I think it’s the computer hitting the torque limit for 1-2 gear and is pulling boost. 3rd gear runs the full 16-17psi and it smoothed out but 1-2 gear don’t seem to like it over 15-16 psi.

I agree that what I experienced when I ran map 3 was I felt those fluctuations on boost and on the car .... at times I will feel that on map 2 when taking off aggressive from the line on like first and second gear .... not sure what it is thou .... all I know is when I run map 0 and do the same I never feel the it ...

 

[Adamdan]

I

I agree that what I experienced when I ran map 3 was I felt those fluctuations on boost and on the car .... at times I will feel that on map when taking off aggressive from the line on like first and second gear .... not sure what it is thou .... all I know is when I run map 0 and do the same I never feel the it ...

Yup I think it’s Torque limit and 2wd guys don’t feel it because they most likely spinning tires or doing boost by gear. In my logs as soon as car hits over 15psi in 1st or second it dips down then try’s to come back up and can dip down again. Once they have a proper boost by gear not being used with speed I might try lowering boost to 15psi in 1-2 to smooth things out.

 

[Angel]

Yup I think it’s Torque limit and 2wd guys don’t feel it because they most likely spinning tires or doing boost by gear. In my logs as soon as car hits over 15psi in 1st or second it dips down then try’s to come back up and can dip down again. Once they have a proper boost by gear not being used with speed I might try lowering boost to 15psi in 1-2 to smooth things out.

Agreed I am AWD and feel it every time .... it’s like a the car jerks then it comes back to normal ..... it’s weird it’s happened to me a lot especially when I took the car to the track ....I have no idea if it’s something that is fixable by the JB4 being a piggyback but I have learned to live with it .....

Yup I think it’s Torque limit and 2wd guys don’t feel it because they most likely spinning tires or doing boost by gear. In my logs as soon as car hits over 15psi in 1st or second it dips down then try’s to come back up and can dip down again. Once they have a proper boost by gear not being used with speed I might try lowering boost to 15psi in 1-2 to smooth things out.

This is honestly my only complaint about the JB4 is when I experience This ....other than that the JB4 is solid

 

[Adamdan]

How does boost by gear work now I might try it and see how it works. I see in setting it has 1st 2nd 3rd fear spots. Do I just put in 15 in those spots so it only hits a max of 15psi?

This is honestly my only complaint about the JB4 is when I experience This ....other than that the JB4 is solid

I noticed 1-2 felt the most sluggish when I was not running enough octane. You should try running a E85 mix to see if it’s smoothed out. The amount of power taken away I feel in 1-2 it’s ver very slight and easy to miss it’s nothing big. What mods are you running?

 

[brancky3]

Just out of curiosity, how does it detect that it stopped flowing, I mean technically what is happening.

BMW JB4 Methanol Injection Kit - Compatible with all N20, N54, N55, N63, S63 and S55 motors

There's a solenoid that the meth hose connects to; I assume once this solenoid stops detecting fluid it will send a signal to the FSB JB4 WMI Controller which in turn signals the JB4 to change the map to something safer

 

[Angel]

I noticed 1-2 felt the most sluggish when I was not running enough octane. You should try running a E85 mix to see if it’s smoothed out. The amount of power taken away I feel in 1-2 it’s ver very slight and easy to miss it’s nothing big. What mods are you running?

I don’t want to run E30 on a daily driver on a daily basis .... I have yet to run E30 .... I will run E30 this summer when I hit the track .... I don’t want to make it a habit to run E85 on the car I don’t know what issues that could cause in the long run .... Here in Illinois we 93 octane standard so that I run and it’s good gas ...

 

[Adamdan]

I don’t want to run E30 on a daily driver on a daily basis .... I have yet to run E30 .... I will run E30 this summer when I hit the track .... I don’t want to make it a habit to run E85 on the car I don’t know what issues that could cause in the long run .... Here in Illinois we 93 octane standard so that I run and it’s good gas ...

I was more thinking you can just try it to see if it’s a octane thing. If you have intakes and primary cat delete it could be your boost comes on harder to computer has to take away boost faster. I run a 91 octane that’s e10 and add another’s 12.5L OF e85 to give me a e30 mix.

 

[Angel]

I was more thinking you can just try it to see if it’s a octane thing. If you have intakes and primary cat delete it could be your boost comes on harder to computer has to take away boost faster. I run a 91 octane that’s e10 and add another’s 12.5L OF e85 to give me a e30 mix.

I highly doubt it’s an octane thing ... we have good quality gas and I only pump Mobil 1 93 octane ..... it is defenetely the JB4 ... I agree I strongly beleive is that the boost kick in fast and strong and ecu or something is fighting it ... now I don’t have data to prove that but that is what it feels like ... my friend has used E30 and he has the same issue as well ....

 

[STINGER]

BMW JB4 Methanol Injection Kit - Compatible with all N20, N54, N55, N63, S63 and S55 motors

There's a solenoid that the meth hose connects to; I assume once this solenoid stops detecting fluid it will send a signal to the FSB JB4 WMI Controller which in turn signals the JB4 to change the map to something safer

I thought the solenoid is just like an on/off switch open/close and doesn't have the ability to detect flow?