Dual Dawes report

[Dr Gary]

I run/force lower (sub 12 psi) boost when engine is cold or when I want to avoid limps cause I have max spool up (needle valve nearly closed) as high boost is at 18 psi max. I did observe better fuel eco with lower boost mode especially during cruise on the highway as long as I tolerated higher EGTS (+50°C-80°C) on average.

Running "high boost" only causes me a lot of grief especially under "spirited" acceleration (switching over from low to high slows the airflow a little)I get limps at pre-determined RPMs as designed by the a holes from Bosch/Zexel brigade. Nothing to do with safety but everything to do with emissions and look what the bastards did it on VW/GM and possibly others.....

Regards

I avoided the limp mode by fitting an aftermarket oversize AFM (air flow meter) housing. Aluminium and just fits in place of original. It came from HPDiesel in SA. Not cheap at $250 but it just works !!
EGT seemed to be pretty safe in both modes.

Just in case anyone cares :-(