i've searched with no results to this particular question:

is there a way to easily stick the external wastegate open so i don't go into positive boost without having to open the wastegate housing or actuator housing each time?

i want to tune with the turbo running off the spring so no EVC.

i plan to build a motor with s5 rotors to tune on E85 (i got a lot of e85 around here so i'm taking advantage) however i need to be able to effectively turn the turbocharger "off" and run in vac if i need to run good ol fashioned pump 93 away from e85 stations. the plan is to have a low or no boost gas tune on the side for traveling or commuting with gas.