waste gate actuator ajustment

jasonada

New member
Points
13
From
Nottinghamshire
Car
peugeot 206 1.4 hdi
hi all I'm a newbie to turbo tuning I've been told if you alter the length of the actuator arm it increases the the boost. Is there any truth to this or is a remap better for tuning ? Thanks my car it a diesel
 

Froggy

Newbie
Points
1
From
South east
Car
Mini cooper sd
Your better off remapping, you can adjust rod length BUT it will only up boost pressure slightly then ECU will shut boost down ( limp mode ) get it remapped or you could try a tuning box. Have fun
 

obi_waynne

Administrator
Staff member
Moderator
Points
887
From
Deal, Kent UK
Car
A3 1.4 TFSI 150 COD
This is the mod we used to do back in the day before fuel injection. As long as there is enough fuel to match the extra air and you don't exceed what the car ecu feels is safe you should be ok.

Most ECU's will enter a limp home mode if the boost goes too high.
 

TCJBOLDIE

Torque King
Points
652
From
Brisbane
Car
JB Starion
Generally tightening the wastegate actuator rod will keep the gate flap closed a bit longer allowing the turbo to rev faster thereby increasing pressure higher than before HOWEVER this can lead to damaging the engine.

Basically more air being crammed into the cylinders without the corresponding increase in fuel supply to keep the Air Fuel Ratios safe can lead to detonation resulting in a hole in the piston or damaged ring lands.

My experience is with modding a gas powered car and not diesel powered BUT I would tread carefully as diesels are more expensive to repair when things go bang.
 
Top