P30FE- Noobie needs help

[scflaw]

Hey guys i'm a noobie that needs your help!

I have this persisting P30FE (Boost Pressure too High: WG clamped- 1) code. Marv85 has been nice enough to help me with some diagnostics.

Car Specs and Mods
07 E93 N54 6AT
Cobb 401 Drive LT
AFE Scoops
K&N Drop In
BMW PE
AP Racing Brakes

Here is the scenario

I drop the car into 3rd gear and keep the foot on partial throttle to keep it at 2500 RPM for around 10-20 seconds. I then give it 3/4 throttle and the car starts spooling and at 100 Km/H, the car pops a check engine light and i have no boost at all.

Background

Had it sent to the dealer, where they replaced the HPFP and Injectors as well as updated the DME to I8A0S. Car ran fine for a 2-3 months and now its back.

Possible Issues?
Wastegate getting blocked by DP
Wastegate needs adjustment
Solenoids?
defective actuator arm

I'll try to get logs but the funny thing is that it only happens in that scenario. Where i have the car in third gear near spool and then give it the beans.

[marv85]

Hey man, Good to see you here... much better than e90crap...

I'm out of ideas to be honest but I'm sure you'll get good help here. There is a lot of knowledgeable people here.

Be patient though

[Sticky]

You'll get hep.

@dzenno@ProTUNING Freaks

[scflaw]

Hey man, Good to see you here... much better than e90crap...

I'm out of ideas to be honest but I'm sure you'll get good help here. There is a lot of knowledgeable people here.

Be patient though

haha, yea i've been reading alot of the posts on the forums here and there seems to be alot more people knowledgable about the workings of the n54 . The code is driving me nuts, i'm supposed to be working but i keep ending up googling about this code. =S

[bigdnno98]

Do you get the code with Cobb uninstalled?

[scflaw]

Prior to the dealer visit yes. i haven't tried to return it to stock yet. I'm wondering if i jb4 with wg adjustments might solve my problem.

[bigdnno98]

Prob not. Sounds like a hardware issue if it does it stock.

[scflaw]

that fuxking sucks, weird thing is how it suddenly came back after a few months.

[dzenno@PTF]

If it happens stock its a hardware issue

[marv85]

btw how many miles does your car have?
Did you try s2+ yet? 4.02

[marv85]

@vasillalov , didn't you grease your wastegate actuators at some point? I know you issue was tune related though...

[scflaw]

i read vasillalov's post on greasing the actuators too, thats something i might have to do.

I'm going to try finding a lift and seeing if the wastegate is hitting or loose and then i'll see if i should either
tighten or grease the wastegate.

$#@!, i'm too broke to buy the new Vargas Stage 1 B turbo =(

[Legionofboom]

stuck WG actuators.

Take it back to the dealer if you can.

[lulz_m3]

Does your car have wastegate rattle? If so try calling BMW NA, give them your VIN and ask if your turbos are covered under the extended warranty for wastegate rattle. If so, take it to BMW and complain of the wastegate rattling. They will either try to adjust the wastegates, or replace the turbos. I just got a new set on my car.

[Legionofboom]

Does your car have wastegate rattle? If so try calling BMW NA, give them your VIN and ask if your turbos are covered under the extended warranty for wastegate rattle. If so, take it to BMW and complain of the wastegate rattling. They will either try to adjust the wastegates, or replace the turbos. I just got a new set on my car.

Whats the #

Im going to try that

[lulz_m3]

Whats the #

Im going to try that

Customer Relations:
1-800-831-1117

[Turkeybaster115]

OP, did you try downloading the latest cobb firmware, and maps? This has solved the problem for some.

[Itsbrokeagain]

Greasing stuck actuators? Never heard of that. You mean the actual joint seizes on the turbine housing? At that point no grease will fix that, much less its an invitation for a fire. Replacement is the only option.

[Turkeybaster115]

Possible Issues?
Wastegate getting blocked by DP
Wastegate needs adjustment
Solenoids?
defective actuator arm

I doubt it's your wastegates. If that was the issue, you would throw a check engine light, under full boost, not just 30FE. I did some research on this on E90crap. Looks like that's what happened to Mr. 5

On another note, it seems like even vendors get banned now on E90. Modbargains.com got banned, recently!

[Turkeybaster115]

A PID algorithm is included as part of our engine management computer from the factory: http://en.wikipedia.org/wiki/PID_con...d_applications

This is part of our boost control. If this portion of the software hasn't been carfully re-written, it's probably the culprit behind, your 30FE codes. The latest cobb firmware, and maps (4.02) reportedly fixed this issue? someone correct me if I'm wrong

[marv85]

Why did modbargains get banned lol?

[lulz_m3]

A PID algorithm is included as part of our engine management computer from the factory: http://en.wikipedia.org/wiki/PID_con...d_applications

This is part of our boost control. If this portion of the software hasn't been carfully re-written, it's probably the culprit behind, your 30FE codes. The latest cobb firmware, and maps (4.02) reportedly fixed this issue? someone correct me if I'm wrong

He's having the issue on the stock map as well, its hardware.

[lulz_m3]

Why did modbargains get banned lol?

Modbargains got banned like 3-4 months ago. Something about commenting in another vendors threads.

[vasillalov]

@vasillalov , didn't you grease your wastegate actuators at some point? I know you issue was tune related though...

I was thinking of doing that, but so far, I've not attempted to do so. I have no waste gate rattle or wastegate issues (31K miles). Knock on wood. Mine was definitely tune related and was resolved by upgrading to 4.02 maps.

[marv85]

^Thanks for your input Vasil.