Hi,

Just noticed your origonal message has been edited, zvh what engine management are you using, if the std escort RSTurbo mfi type, which it sound like, check that the inlet hose from the metering unit ( the inlet hose to the turbo ) although you said that the hose if i understand you correctly is a uprated power engineering hose, check it is not soft as this hose is common on RS Turbo's for collapsing and restricting boost. not 100% sure what the timing is on the zvh (ignition ) std rs is 12,d btdc. here is a pic of the std cvh valve timing. i wouldent play with the cam pulley as you may cause more problems, regards Dave R.