Ive now fitted the EVC 3 using the dual port method instead of blocking off the 2nd port. It seems as if the boost goes up to 5 psi quickly but takes time to reach 10 psi. Would this have anything to do with using the dual port method or could it have something to do with taking the vacuum feed for it off the front vacuum line which also has the ssqv, emanage mass sensor and boost gauge coming off the same vacuum line? If i run some of these of a different feed will this give a better vacuum to the HKS solenoid and therefore reach maximum boost quicker? Any info will be good, thanks