21 Turbo 21 turbo over boost

[Ryan21T]

Hi guys.im having problems with over boost at the moment is there any way I can stop the overboost kicking in or bypass a sensor or something to stop it happening?

Regards
Ryan

 

[Brigsy]

Overboost sensor is there for a reason, have you turned the boost up?

 

[Ryan21T]

No running about 15psi.uprated turbo,cam,ecu,injectors,intercoolers just wondered if there was a standard boost sensor that's cutting in.the sensors are the only thing that havnt been replaced and never had this problem before.

 

[Andyquadra]

Its under the black ecu cover

 

[DaveL485]

No running about 15psi.uprated turbo,cam,ecu,injectors,intercoolers just wondered if there was a standard boost sensor that's cutting in.the sensors are the only thing that havnt been replaced and never had this problem before.

Under the black ECU cover there is a sensor with a pipe feeding to it from the plenum chamber, and two spade terminals on the other end.

Remove it, hook it up to a mityvac, connect a multimeter across the sensors set to continuity. It'll make a circuit as default, so pump up the mityvac until it cuts the circuit. note the pressure it cuts at, and adjust the screw between the 2 spade terminals to set the cut point to 18psi.

Do not just fuck with the screw without a calibration
Do not bridge the sensor out its there for a reason and you'll blow it up

If you can be arsed send it to me and ill calibrate it for you.

 

[Ryan21T]

Under the black ECU cover there is a sensor with a pipe feeding to it from the plenum chamber, and two spade terminals on the other end.

Remove it, hook it up to a mityvac, connect a multimeter across the sensors set to continuity. It'll make a circuit as default, so pump up the mityvac until it cuts the circuit. note the pressure it cuts at, and adjust the screw between the 2 spade terminals to set the cut point to 18psi.

Do not just fuck with the screw without a calibration
Do not bridge the sensor out its there for a reason and you'll blow it up

If you can be arsed send it to me and ill calibrate it for you.

Thanks Dave you a star.ill let you know how I get on.

 

[Ryan21T]

Thanks Dave you a star.ill let you know how I get on.

Thanks Dave boost problem all sorted now thanks.
Don't suppose you could tell me what the other little black cylinder type sensor does with the adjuster in it does?
Cheers

 

[DaveL485]

Idle fuel mixture adjustment.