[haxigi]

Hi.

Im owner of a BMW E46 320D 150HP. After i bought it i went to chip tuning spec and he made me 185HP.
Then after few years i made myself this mods:

- Decat both cats (no dpf - EU3). I have left original cat box and just took cats out
- EGR Off by hardware (no soft)
- Installed bigger Intercooler from fmic
- Changed turbo to GTB1752V

After all that mods i made another dyno run and... the result is 165HP.

I don't know why but when i made dynamic logs with test-o i saw this strange behave:

   

red - boost is
blue - boost requested

run: 3 gear from 1000RPM up to 4500RPM

So why is turbo making this drop? It pump it up, then down, then once again up and down.

[Extcy]

It runs hard in the limiter. you ecu try to handle it. thats why it goes up and down.

I drive the same turbo and engine at 252HP and 530NM

[haxigi]

It runs hard in the limiter. you ecu try to handle it. thats why it goes up and down.

I drive the same turbo and engine at 252HP and 530NM

So what should i do? Max boost is 1.7bar and ecu desired boost is 1.5bar.

[Extcy]

It runs hard in the limiter. you ecu try to handle it. thats why it goes up and down.

I drive the same turbo and engine at 252HP and 530NM

So what should i do? Max boost is 1.7bar and ecu desired boost is 1.5bar.

Try a Reset for all modules in CAS with Inpa. When the ecu cant handle it, let a good tuner remap your car again.

[haxigi]

It runs hard in the limiter. you ecu try to handle it. thats why it goes up and down.

I drive the same turbo and engine at 252HP and 530NM

So what should i do? Max boost is 1.7bar and ecu desired boost is 1.5bar.

Try a Reset for all modules in CAS with Inpa.

isn't CAS responsible for anti thieft system?

[Extcy]

It runs hard in the limiter. you ecu try to handle it. thats why it goes up and down.

I drive the same turbo and engine at 252HP and 530NM

So what should i do? Max boost is 1.7bar and ecu desired boost is 1.5bar.

Try a Reset for all modules in CAS with Inpa.

isn't CAS responsible for anti thieft system?

yes. and with INPA or Ista you can make a reset off all.

[haxigi]

but how reseting anti thieft system can help me with boost problem?

[Extcy]

but how reseting anti thieft system can help me with boost problem?

In CAS you can do a reset of all ECUs. It clears all learned values. Then your engine control unit learns new. It is possible that he gets better with the new turbo.

[haxigi]

but how reseting anti thieft system can help me with boost problem?

In CAS you can do a reset of all ECUs. It clears all learned values. Then your engine control unit learns new. It is possible that he gets better with the new turbo.

Friend am i doing it in the right way?
Inpa - DDE - Ansteuern (F6) - F1:
   

Then one more time F1 but error appears:
   

[Extcy]

No.

INPA - Karosserie - CAS (Car Access System) - Steuern (F6) - Steuergeräte Reset (i think F4)