Quicky.
Stage 3 Saff 4x4 on standard T3. dark greens 3 bar map etc etc.

Only peaking at 1.25 bar and holding 1 bar. Plumbed turbo direct to actuator with 1/2 hole of preload and its lifting at 0.55 bar approx (8psi). so actuator looks ok i think and Amal valve is performing some kin of boost control, but cant get it boosting any higher that above. Is that not low for this setup? i would have thought it should be peaking around 24psi and holding 20-22psi. (obviously tuner dependant, but still seem very low).

Any ideas? could it be a dodgy amal valve. >?

Note: The original qouted boost results were with a full 1 hole and a bit extra of actuator preload, so previous owner has obviously been trying to raise boost unsuccessfully.

 

..have you checked that you dont have any leaks around..

 

re jet the amal valve

 

Yeah thats the next step. tried all other ideas. TRying to remember which port needs modding. anyogot got a desciption of how jet sizes in each port effect the boost characteristics.?

thanks

 

At that spec a simple increase in the jet size in port R will allow the amal to bleed more air and increase boost.

Just make sure you monitor AFR and for det while doing so.