I hear you talking about the APEXI AVC-R for the ix alot and I was wondering if this is the only EBC that will work good to get rid of the tamper? Like will the simple GReddy Type S Electronic Boost Controller, GReddy Profec B Boost Controller -Spec 2, blitz dual sbc spec S work?

Also can this be added later to a custom tune and still be safe or is it need at the time of the tune?