STOCK = 30FF, JB4 NO 30FF

Subwoofer

Sergeant
Jan 9, 2020
267
48
0
Ride
335i
Hello all, So after ignoring all of your advice about not buying a 335I, I went and did it.

Anyways, I have an interesting problem.

When I set the JB4 Map to 0 and try and do a 3rd gear pull, the CEL comes on, with the error 30FF

If I then put Map 1 back on, I can WOT without any engine codes, the only time which I have noticed I get a code is when I'm in M6, and I just apply throttle instead of changing down a gear.

The vacuum lines were replaced by BMW about 2 years ago, does anyone have any sort of remedy?
 

Subwoofer

Sergeant
Jan 9, 2020
267
48
0
Ride
335i
I only opened the first log.
Set all default settings and log map 1.
Tmap is wrong as well as DWP, Fuel Bias, Duty Bias, etc
Hello, I managed to experience some very weird scenarios tonight, when I tried just MHD stage 1, when I got to around 3k revs it would hesitate and then the power just completely disappeared and I came to a stop.

I tried doing logs with stage 1, stage 1 + and stock (MHD installed)

I have no mods installed.

OEM charge pipe is installed,
Sparkplug and coils are god knows how old (possible change)??

I have attached lots of LOGS via SPOOLSTREET as I am unable to get them as a .csv file for you.

Stage 0 MAP LOG
Stage 0 MAP LOG 2
Stage 0 MAP LOG 3
Stage 1 MAP LOG (91OCT)
Stage 1+ MAP LOG (93OCT)

I'm really hoping you, or someone else can help. It's so strange, when I run JB4 (MAP 1) or JB4 + BEF I never get any error codes, but now I have returned to stock, it's not happy.

I got a variety of DTC codes tonight :

2BA2 Terminal 15 deactivation, activation.
2D2E Throttle-valve angle - intake-manifold vacuum, correlation
30FE Turbo charge-air pressure too high (map 0 MHD)
30FF (stage 1)

Many thanks in advance, if you need any more information, please let me know.
 

SlowE93

Major
Jul 2, 2017
1,648
1
954
0
Just a plane ticket away !
Ride
E93
Hello, I managed to experience some very weird scenarios tonight, when I tried just MHD stage 1, when I got to around 3k revs it would hesitate and then the power just completely disappeared and I came to a stop.

I tried doing logs with stage 1, stage 1 + and stock (MHD installed)

I have no mods installed.

OEM charge pipe is installed,
Sparkplug and coils are god knows how old (possible change)??

I have attached lots of LOGS via SPOOLSTREET as I am unable to get them as a .csv file for you.

Stage 0 MAP LOG
Stage 0 MAP LOG 2
Stage 0 MAP LOG 3
Stage 1 MAP LOG (91OCT)
Stage 1+ MAP LOG (93OCT)

I'm really hoping you, or someone else can help. It's so strange, when I run JB4 (MAP 1) or JB4 + BEF I never get any error codes, but now I have returned to stock, it's not happy.

I got a variety of DTC codes tonight :

2BA2 Terminal 15 deactivation, activation.
2D2E Throttle-valve angle - intake-manifold vacuum, correlation
30FE Turbo charge-air pressure too high (map 0 MHD)
30FF (stage 1)

Many thanks in advance, if you need any more information, please let me know.
Do you want MHD or Jb4 ?
Jb4 will use a BEF that can be loaded via MHD.
 

Subwoofer

Sergeant
Jan 9, 2020
267
48
0
Ride
335i
Then completely remove the jb4 and go MHD to avoid any issues. The jb4 is still tied into the DME harness. Even if you had a loose connection, it will still cause issues even if its off.
Good luck.
Hey, Great news!!!

I removed the JB4 (I'm sure someone here will buy it)

I changed the spark plugs (they looked like the oem ones from factory) so 54k miles later they definitely needed a change.

I did some logging today, and the car is running great stock and tuned. I am aware that I need a new Intercooler, though.

Stage 0 MAP LOG 1
Stage 0 MAP LOG 2
Stage 1+ MAP LOG 1
Stage 1+ MAP LOG 2
Stage 1+ MAP LOG 3
Stage 1+ MAP LOG 4

I'm going to leave Stage 1+ on, because I don't actually accelerate hard, much, so there is no need to change + everything is working!

I am going to order a new intercooler and downpipes at some point.
(if anyone in the uk knows a seller which has them that would be great)

Thank you very much for reading the logs.