[youloze]

Originally Posted by rons e92

Which map have you been running?

Have you ever gotten gas at this station before?

Has the temp in your area dropped significantly?

I've run strictly Map 2 on 93 octane for the last 3k miles since I installed it. First time getting gas at this particular Shell. Temps have only dropped about 5 degrees recently.

I'm not convinced it's the JB4 as it's been fine. I'm also not convinced it's the gas since the codes are for low fuel rail pressure. Don't think bad gas would cause a low pressure code?

[youloze]

Originally Posted by techwhiz1

So,

I'm looking at the codes fromy experience (not S58) with an N54 of it isn't your JB4 once you remove it it could be the low pressure bulk fuel pump or the HPFP. Either can cause the type of sputtering issue you describe.

I you start the car will it idle or does it just die?

Idling and not dying until you try to pull of will indicate a fuel delivery issue and not bad gas.

Fuel rail pressure is readable via OBD if you have a BT or WIFI reader via even free apps like Torque on Android.

I'm suspecting you LPFP in the tank since you are getting some plausibility readings for fuel level. The float and pump are all one unit.

Thank you for the reply and info!

It seems if I let the car sit for 10-15 minutes it will start and idle fine for about 10-20 seconds, then will sputter and die. If I then attempt to start it again it will die instantly.

I'll see if I can get a quick log of the fuel rail pressure while it's running the brief time it will run before it dies.

[rons e92]

Originally Posted by youloze

I've run strictly Map 2 on 93 octane for the last 3k miles since I installed it. First time getting gas at this particular Shell. Temps have only dropped about 5 degrees recently.

I'm not convinced it's the JB4 as it's been fine. I'm also not convinced it's the gas since the codes are for low fuel rail pressure. Don't think bad gas would cause a low pressure code?

Map 2 is no good for these cars. Don't run additive maps. It isn't safe.

Try 4 or 5. Those are absolute target maps.

[ourlee]

Originally Posted by RandomBro

Huh? cars STOCK break, modded cars break, cars break. The hell are you talking about. You don't even know in this case if the JB4 caused the issue. You're just jumping on an assumption train. Just because you're too pussy shit to mod a car, we don't need to hear from the Bible of Mr.Pussyfoot, fuck off.

This is why we fight lol

[youloze]

Originally Posted by rons e92

Map 2 is no good for these cars. Don't run additive maps. It isn't safe.

Try 4 or 5. Those are absolute target maps.

I shared my logs with BMS and was told specifically by them to run Map 2 and many others run Map 2 on 93 octane and no other mods.

I don't even know if this issue is caused by the JB4. At this point I'm just trying to find out what happened and if there have been known instances of bad HPFP or LPFP on the S58 at low mileage.

[rons e92]

Originally Posted by youloze

I've run strictly Map 2 on 93 octane for the last 3k miles since I installed it. First time getting gas at this particular Shell. Temps have only dropped about 5 degrees recently.

I'm not convinced it's the JB4 as it's been fine. I'm also not convinced it's the gas since the codes are for low fuel rail pressure. Don't think bad gas would cause a low pressure code?

The mixture too lean code is really what's standing out to me. Fuel pressure to low would be a result of that being it can't send enough fuel because it's maxing out the system which is why it's throwing the mixture too lean code and misfiring.

This is a result of the additive map on the JB4. I'm not making this up, you can give them a call. Additive maps are not safe for G8x cars as per BMS. Maps 1 and 2 are additive. You're supposed to use map 4 or 5.

Did you ever log the car on map 2 and send it to BMS? They would have told you don't run that map.

[youloze]

Originally Posted by rons e92

The mixture too lean code is really what's standing out to me. Fuel pressure to low would be a result of that being it can't send enough fuel because it's maxing out the system which is why it's throwing the mixture too lean code and misfiring.

This is a result of the additive map on the JB4. I'm not making this up, you can give them a call. Additive maps are not safe for G8x cars as per BMS. Maps 1 and 2 are additive. You're supposed to use map 4 or 5.

Did you ever log the car on map 2 and send it to BMS? They would have told you don't run that map.

Yes, I sent them multiple logs of Map 2. Both someone from BMS and a respected member of their forum said they looked good and that map 2 was the one to run. Most other logs I see from people running 93 octane and no mods are map 2 as well, so I felt that was the one to run.

It's interesting that they told you to run absolute and everything I see on their forum and my research shows it should be map 2. I'm not saying you are giving false info, in fact I find it interesting and will follow up with them.

In the meantime I'm about to post an update that the issue appears to be the fuel pressure harness on the JB4.

[youloze]

UPDATE: Disconnected the JB4 fuel pressure harness and connected the OEM harness. Car starts and idles as it should. I let it idle until the oil was up to temp and no issues. Plugged the JB4 harness back in to the sensor and car would not start. Finally started and sputtered and died just like yesterday. I have an email out to Burger Motorsports and waiting for a reply

[ourlee]

Is your point person George Smooth? Best customer service I’ve ever received in my automobile journey.

[rons e92]

Originally Posted by rons e92

The mixture too lean code is really what's standing out to me. Fuel pressure to low would be a result of that being it can't send enough fuel because it's maxing out the system which is why it's throwing the mixture too lean code and misfiring.

This is a result of the additive map on the JB4. I'm not making this up, you can give them a call. Additive maps are not safe for G8x cars as per BMS. Maps 1 and 2 are additive. You're supposed to use map 4 or 5.

Did you ever log the car on map 2 and send it to BMS? They would have told you don't run that map.

I'm just relaying information as they've posted on here multiple times in a bunch of threads.

This is why I hated JB4 and my experience with it over a 6 month period. Publicly they say B58 gen 2 and S58 cars (g chassis) should only run absolute target maps which are 4 and 5, yet they're telling you directly you're safe on map 2.

My G42 never ran right on JB4. I did many many logs, and eventually would just run map 1 maybe once a month for some pulls. Never could run faster than an 11.1@118 in my M240 on JB4.

I hope you get this figured out. Sorry I couldn't be of more help.

[youloze]

Originally Posted by ourlee

Is your point person George Smooth? Best customer service I’ve ever received in my automobile journey.

Based on the name, not sure if you're serious haha. But I'm speaking directly with Terry.

[youloze]

Originally Posted by rons e92

I'm just relaying information as they've posted on here multiple times in a bunch of threads.

This is why I hated JB4 and my experience with it over a 6 month period. Publicly they say B58 gen 2 and S58 cars (g chassis) should only run absolute target maps which are 4 and 5, yet they're telling you directly you're safe on map 2.

My G42 never ran right on JB4. I did many many logs, and eventually would just run map 1 maybe once a month for some pulls. Never could run faster than an 11.1@118 in my M240 on JB4.

I hope you get this figured out. Sorry I couldn't be of more help.

No worries, thank you for the info and insight. I will report back to this thread once I have it sorted.

[techwhiz1]

Originally Posted by youloze

UPDATE: Disconnected the JB4 fuel pressure harness and connected the OEM harness. Car starts and idles as it should. I let it idle until the oil was up to temp and no issues. Plugged the JB4 harness back in to the sensor and car would not start. Finally started and sputtered and died just like yesterday. I have an email out to Burger Motorsports and waiting for a reply

Well, at least you know that it's bad harness or something back to the JB4 itself.

Definitely glad to hear you are on your way to a fix, if nothing else removing the JB4.

[Angmar]

Nm I just read your last post….dont understand how jb4 is causing that ??!

Must be a bad connection.

[ourlee]

Originally Posted by youloze

Based on the name, not sure if you're serious haha. But I'm speaking directly with Terry.

George (nickname Smooth) supported my VWs and Audis.

[MASHCT]

Imagine if the first step before posting in the forum was to remove the JB4 to see if that was the issue. Just an observation.

[SpaceGhost]

Interested to hear the outcome here. I have previously run JB+, JB3, and JB4 on various cars without even a hiccup. Was considering for the new M2 but will monitor this thread closely before considering.

Best of luck to you OP.

[youloze]

Originally Posted by MASHCT

Imagine if the first step before posting in the forum was to remove the JB4 to see if that was the issue. Just an observation.

Imagine if I was on the side of the road in traffic without the tools to do it and just needed help with codes. Dipshit.

Also, imagine not being a keyboard warrior.

[youloze]

Originally Posted by SpaceGhost

Interested to hear the outcome here. I have previously run JB+, JB3, and JB4 on various cars without even a hiccup. Was considering for the new M2 but will monitor this thread closely before considering.

Best of luck to you OP.

Thank you. BMS is sending me a chipset in the mail for the fuel pressure harness. Will report back.

[MASHCT]

Originally Posted by youloze

Imagine if I was on the side of the road in traffic without the tools to do it and just needed help with codes. Dipshit.

Also, imagine not being a keyboard warrior.

Ooh aren't we a bit testy. Small penis? Mommy didn't love you enough? Daddy loved you a bit too much? Tell us where everyone hurt you without telling us everyone hurt you.

Like I said it was just an observation. Talk about a keyboard warrior. To know thyself is wisdom beyond measure.

Anywho... what you're telling us now is, you could have had it towed home, removed the JB4 and had your answer.

No one in the forum did. Except the folks that told you to remove the JB4 & see if you still had the problem.

[Mike_H_]

Originally Posted by MASHCT

Anywho... what you're telling us now is, you could have had it towed home, removed the JB4 and had your answer.

That's exactly what he did, what do you think he did?

[MASHCT]

Originally Posted by Mike_H_

That's exactly what he did, what do you think he did?

What I'm originally commented about was the entire thread could've been avoided if he did that in the first place instead of the panicky "please help!!!" thread.

In the end, his mod was the issue.

I never told him to fix it on the side of the road, either. All I said was "hey if you had done that before posting, this thread could've been avoided. Was a tongue in cheek observation.