NefMoto

Hello, I'm fairly new to bosh ecu's. I have a 2008 VW Golf that has a GT30 turbo with an external wastegate. The stock wastegate actuator is connected for sake of dtc as well as the blow-off actuator.

Car has bigger injectors and a high pressure fuel pump mod with a slightly bigger size airflowmeter tube. So far I have the cruising and driveability dead on and long term fuel trims are at 0~0.2 via KRKATE without touching the lambda maps.

Whenever I try to go about 20psi boost it will throw a code p0234 turbocharger overboost. Sometimes it throws an underboost code too. I have tried following the wiki and not requesting too much boost too soon on all of the boost tables and following the boost ramp of the turbo setting the high limits above 4000rpm as far as 200%. Is there a way to eliminate these errors? Under 18psi the car runs perfect, afrs are in the safe side, and timing tables are untouched. As soon as I turn the boost (manual) controller up it closes the throttle body and throws a code (sometimes pending)

yes there are many maps and individual values associated with overboost/underboost codes.  Are you using maestro?

And i think i know exactly which map is missed :D

 :P

I'm using WinOLS translating a damos for the tsfi that's floating around here.

And your point is?

I see the way this is going...please understand I'm not looking for someone to give me a map or a tune. I don't mind reading documents if they point me in the right direction. No need for useless responses like rick's

If you use a manual boost controller, then you will be forever fighting the ECU.  Get rid of that and use the N75 and tune your boost from there.

Rick

could he just make the delta larger between requested and actual?

He could,

but it would make far more sense that requested and actual are fairly close so everything is working as it should.

If you deal't allready with the load and boost limit maps  then raise the maf limit map. On the damos floating around here is at 1C4696 just before the KFKHFM. On the damos is not defined.(settings are address 1C4696 9x8 2d inverse and factor 0.1 if i am not mistaken..

Thank you. I have tried using the stock valve. With the stock values it was overshooting the boost target by alot. Remember I no longer have an internal wastegate. But will give it another shot.

Yes of course, this will happen. So tune it so that it operates correctly...
Dial in the correct duty cycles, linearization and so on, and the boost control will work just fine.

Thank you for your response. That map is defined in the A2L and is KFMLDMX but the address is offset on my file. To help fellow readers, the map's factor is indeed .1 (Kg/hr), 2D inverse, X-axis is RPM factor 40, y-axis is %DK factor 0.024414.

I will try increasing this globally and will post the results.

any chance you can share or post a link to that damos you are using?

It's not a damos and it's not complete. I'm just translating from the A2L that's floating in this site little by little. I'm sure there are more complete ones.

Can you upload the ori file?
I will help you...

How is the stock N75 going to help if I want more than 22 psi?

Thank you. I upped the KFMLDMX map and it took care partially of the problem.Right now it's as high as 1400 Kg/hr around max throttle areas. I still feel the ecu fighting the boost but it is going in the right direction at least :)

Here is the original map (original stock read)

And the last test I did (boost cap testing)

Thanks in advance!.

I am very sorry to tell you that.
This is not a file for a big turbo project.
This is not good for K03S even!!!
You have to make a lot of changes.
Boost maps, Fuel pressure maps,diagnostic maps etc...etc

Very good. I welcome all comments on it. Could you be more specific as to what maps need changing?

So far I have raised / modified for boost:
KFMIRL
KFPLGUB
KFVPDKLD
LDORXN
KFLDHBN
LDRXN
LDRXNZK
4 more boost maps at 1CF3AE, 1CF3F0, 1CF432, 1CF474
KFLDIMX
KFLDRL

for injection:
KRKATE
and all 6 lambda maps

for MAF:
KFMLDMX

For rear cat delete:
CDKAT & byte @ 1D65C0

Throttle:
KFPED_0_A
KFPED_1_A

Timing:
KFZW
KFZW2
and the other 4 timing maps

Torque:
KFMIOP (1 & 2)

Can you tell me what other maps need changing? or which ones should not be touched? I don't mind reflashing the car 50 times if you point me in the right direction. Thank you!

You are running genuine Winols?
I can give you an Ols project with all the maps, you need.
Also i can give you a basic file.
You need 80-90 mm intake and RS4 or Porsche injectors.You could use RS6 also, but only if you running 1,7-1,8 bar Turbo pressure.
You will need a bigger pump, for low pressure fuel.
TTRS is good, Porsche is the best!!!
Do not forget to change, the pressure regulating valve with RS4 (AUDI CODE 079 130 757). With this valve,you can running 140++ bar High pressure,using Autotech HPP or APR,KMD...etc..etc

Yes I am using genuine Winols. It will be much apreciated. :)

The high pressure pump valve was upgraded but the low pressure is still stock, it will get upgraded now. The injectors are APR reworked they don't tell me the flow number but i think they are close to rs4.