LET holding back

[CallyTurbo]

i have phase 3 in my car and lately when going full throttle i get to about 0.6 bar and my car holds back and the boost stops but if i keep my foot down the boost will go up. i have a silicon hose on the AMM to turbo so it can't be the pipe collapsing. what other things could cause this??
thanks

 

[tiiikeri]

Do you have a AFM gauge on your car?What does it show? I had a similar problem last week, and my car was running lean on the boost.Read the previous article "C20 LET RUNNING LEAN".My problem was faulty air mass meter.

 

[GSI-TURBO]

Hmmzz.

I also had some troubles, but after intalling the DTA system with wide band lambda it was solved (i don't have an air mass meter anymore...)

My problem was the old 3 wire sensor wich was simply not working o.k anymore..

 

[CallyTurbo]

don't think it's lean. under boost i have 3 green LED's lit rich.

 

[CallyTurbo]

it's a brand new bosch lambda sensor on the car

 

[ASH]

Hi !

@Caliturbo : Please measure your voltage diffrenz between the ECU ground and the engine ground !

1) Disconnect the 3 pin connector to the power wheel

2) start the engine and switch light on !

3) From PIN.NR 3 ( black wire, ECU side ) to the intake manifold ground measure a DC voltage ( range below 2000mV)

4) When you have more than 100mV GROUND diffrenz , please add a seperate ground wire ( 2.5mm²) from ECU PIN NR.24 to the intake manifold !

5) Then the lambda measurement is correkt !

regards ASH

 

[CallyTurbo]

ash i have already put a seperate ground wire in so it should be reading ok. sometimes when i hit boost just say at 1.1bar the car feels like it's lacking in power and other times it feels ok