A3, 1.8t 150hp low power.

[Dominic18]

Hello, ive just got an audi a3 1.8t 150hp AGU and its making low power. After remap it made 120kw, and 250nm. I have installed exhaust system and intake.

Changed :
All vaccum hoses
O2 sensors
One way valve (pcv)
Plugs and coils
Fuel pump

Compression in all cylinders about 12.4

Turbo is making steady 0,7 bar off boost. Why my power is so low?

 

[b2]

0.7 bar = 10psi which seems low for a remapped 1.8t, have you diagnosed the engine? What fault codes do you have?

 

[Dominic18]

so fault codes whats so ever.

 

[b2]

Could be N75 not working properly, hence low boost. You using an o.e N75 or a Chinese ebay one?

To test N75 and turbo, disconnect the vacuum line from N75 going to turbo actuator, this should make it boost like buggery, so be careful.

If it still doesn't boost then turbo actuator or turbo could be at fault.