Thanks to add i did a diagnostic check and there are no faults stored ??? maybe this function not working as daughterboard installed ??? Gonna just run a z4 put standard airbox back in and standard dv, clean boost control solinoide , Btw the person i bought the car off did change this maybe it has the wrong restrictor pill in now for the daughterboard set up ???? sorry for questions, its just hard when the tuning history is unknown . Just gonna get it running smooth and get management . Thanks again
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