E Series N54 JB4 - Page 317 - N54Tech.com

skysurfer · 10-29-2013, 12:28 AM

Quote:

Originally Posted by BimmerNFS

No it is removed

Yes

Nachos23 · 10-29-2013, 05:46 AM

Thanks; I figured as much, but since the general notes still mention it and the picture is still prominently displayed, i thought i should check

Nachos23 · 10-29-2013, 05:47 AM

Quote:

Originally Posted by skysurfer

Yes

Now I have a yes and a no.... perfect.... which one is it?

SeaBee335 · 10-29-2013, 06:29 AM

Quote:

Originally Posted by Nachos23

Now I have a yes and a no.... perfect.... which one is it?

Open up the case and check it. If it has diodes, cut em and update firmware, then enjoy!

Nachos23 · 10-29-2013, 06:39 AM

Was hoping to avoid that, but I now want to run USB cable into glovebox as I've d/l the logger app for my Android, so I might just open it and find out...Was hoping if I could get a difinitive answer, I could avoid removing and opening the unit.

I am able to upload new firmware and control the unit through the steering wheel, but I'm not sure if the presence of the diodes will not allow me to upload the firmware, or just that the firmware will not operate as expected with the diodes present.

Russell @ BMS · 10-29-2013, 06:53 AM

If brand new, the diodes are not installed. I suggest logging with a computer for your first logs.

Also the software revision number will be part of the log file so you can see what file is already loaded.

Nachos23 · 10-29-2013, 07:11 AM

I will run the cable into the cabin and run the logger.... I have successfully uploaded the latest 27.5 firmware and it uploaded fine. Running a P3 Gauge in analog mode. Running Map 5 or Map 1, I can't seem to generate more than 12psi boost. Was thinking the diodes if installed could be preventing it from generating more boost (like the 13 psi in map 1). Haven't finished the mods though; so could be back pressure from running a stock exhaust. Still need to install the AA intercooler and see if that will help. AA Blowoff installed as is the aFe CAI... Was running the P3 in conjunction with the JB4 until 2 days ago, when I read in another thread that they can interfere with each other, so changed the P3 to analog (vacuum).

Terry @ BMS · 10-30-2013, 10:04 AM

I've had a couple customers report a map 4 switch when using the 2STEP. If anyone else has that issue email me I'll send you something to test.

Russell @ BMS · 10-30-2013, 07:40 PM

Quote:

Originally Posted by Nachos23

I will run the cable into the cabin and run the logger.... I have successfully uploaded the latest 27.5 firmware and it uploaded fine. Running a P3 Gauge in analog mode. Running Map 5 or Map 1, I can't seem to generate more than 12psi boost. Was thinking the diodes if installed could be preventing it from generating more boost (like the 13 psi in map 1). Haven't finished the mods though; so could be back pressure from running a stock exhaust. Still need to install the AA intercooler and see if that will help. AA Blowoff installed as is the aFe CAI... Was running the P3 in conjunction with the JB4 until 2 days ago, when I read in another thread that they can interfere with each other, so changed the P3 to analog (vacuum).

Do a log in third gear from 2.5K to 7k and post in the help section.

muzzammil15 · 10-30-2013, 08:00 PM

I have DCI, and down *****. I have always used map 5. I was wondering if map2 would be better for me then map 5? Any feed back would be appreciated, thank you.

Jnat · 10-31-2013, 03:51 AM

Quote:

Originally Posted by muzzammil15

I have DCI, and down *****. I have always used map 5. I was wondering if map2 would be better for me then map 5? Any feed back would be appreciated, thank you.

Have you tried E85? If not, do yourself a favor and try it with map 5, do two or three 2k-6/7k pulls (3rd gear) and feel the GOODNESS. Map 2 will not do what map 5 does on E. With that said, i'm not sure there's much of a difference without E, possibly a slight edge after pulls for map 5. I def can confirm though, if you use map 5 and don't do the adaptive pulls, you are not experiencing what map 5 has to offer.

muzzammil15 · 10-31-2013, 12:47 PM

Quote:

Originally Posted by Jnat

Have you tried E85? If not, do yourself a favor and try it with map 5, do two or three 2k-6/7k pulls (3rd gear) and feel the GOODNESS. Map 2 will not do what map 5 does on E. With that said, i'm not sure there's much of a difference without E, possibly a slight edge after pulls for map 5. I def can confirm though, if you use map 5 and don't do the adaptive pulls, you are not experiencing what map 5 has to offer.

How is map 5 without the E85? Would map 2 be more beneficial for me without e85?

ashmostro · 10-31-2013, 01:03 PM

Map 5 autotunes, whereas map 2 is fixed boost targets. With e85, map 5 will see the lower temps and knock supression and target higher boost than map 2 and theoretically will still remain stable. Map 2 on small amounts of e85 is fine but kind of defeats the whole point of e85.

Rotary Rasp · 10-31-2013, 03:36 PM

It seems like my car is boosting almost 15psi when the oil temp is still cold. Is there a setting to disable the jb4 when the oil is under 160 degrees?

BEAR-AvHistory · 10-31-2013, 04:24 PM

Should do it on default unless its been set to water temp.

ashmostro · 10-31-2013, 08:01 PM

Quote:

Originally Posted by BEAR-AvHistory

Should do it on default unless its been set to water temp.

Where is this adjustment? I don't feel like my jb4 is ever off...

Terry @ BMS · 10-31-2013, 09:24 PM

With a 335is it's going to run relatively high boost all the time due to the higher factory boost target.

Rotary Rasp · 10-31-2013, 10:46 PM

Quote:

Originally Posted by BEAR-AvHistory

Should do it on default unless its been set to water temp.

How do I check?

ashmostro · 11-01-2013, 01:49 AM

Quote:

Originally Posted by Terry @ BMS

With a 335is it's going to run relatively high boost all the time due to the higher factory boost target.

Indeed, Terry but I can feel the difference between a map 1 setting vs a map 2 for example even when the car is still cold. That doesn't seem like the correct behavior, 335is or not... right?

Jnat · 11-01-2013, 03:45 AM

Quote:

Originally Posted by muzzammil15

How is map 5 without the E85? Would map 2 be more beneficial for me without e85?

IMHO map 5 when the adaptation pulls are done are stronger then map 2 on or off E, I can't back that up with data just seat O pants. On E, it's not debatable, the cars a monster with minimal mods.

bigdaddycain · 11-01-2013, 05:26 AM

If you're running the Flash you WILL see higher boost levels before you hit the 160 temp threshold.

ashmostro · 11-01-2013, 08:29 AM

I'm not. Stock 335is code.

Rotary Rasp · 11-01-2013, 08:31 AM

Quote:

Originally Posted by bigdaddycain

If you're running the Flash you WILL see higher boost levels before you hit the 160 temp threshold.

ah, but I am running the backend flash. Is there anything we can do to lower the boost when the engine is cold?

BEAR-AvHistory · 11-01-2013, 08:37 AM

Quote:

Originally Posted by Rotary Rasp

How do I check?

Set speedo 6 @ tach 3. Will flash the turn signals twice when the oil reaches 160.

Fmonteiro444 · 11-01-2013, 08:38 AM

Quote:

Originally Posted by Rotary Rasp

ah, but I am running the backend flash. Is there anything we can do to lower the boost when the engine is cold?

Yes, stay off the throttle!