2001 XC70 2.4t - ECM 6806 after ecu performance upgrade

[Geggen]

Hi,
I recently did a ecu performance upgrade, BSR stage 1 ppc.
After the upgrade i get faultcode:
ECM-6806 Turbocharger (TC) control system flow fault.

Accordingly to volvo Vida i have:
- checked/replaced all hooses from tcv to turbo.
- replaced the tcv and boost pressure sensor.
- inspected and adjusted the wastegate according to volvo spec.

Still the faultcode shows up. The car is running just like the original program. No difference in performance.

When i remove the performance program, and run original program the faultcode dont show.

Any idea what to check next?

[Kielekg]

Hello!

I have the same problem with car. When BSR's sw is loaded the ECU shows 6806 DTC. DTC is generated when acceleration pedal is pressed to floor, RPM is reaching 4500RPM, the pressure drops from 0.8 bar to 0.4-0.5 bar.
Have you solved this problem, what else should I check?

Thanks is advance,
Piotr