Hi guys i have just installed a greddy E01 and i am problems going past 12 psi....no matter what i do my boost does not seem to cross 12 psi i have a evo 8 so please your help is greatly appriciated...

regards
fahd

 

It sounds like your wastegate isn't being held closed by the boost controller. I would check your vaccuum lines going from the valve unit to the wastegate and pressure source. Also, make sure that your wires running to the valve unit are not cut anywhere.

 

Make sure you have the correct vaccuum line size going to and from the boost controller