So I bought a 2006 wrx wagon recently. It is supposedly tuned for 7psi (wastegate pressure) with a VF39 and no restrictor pill. I am wondering what will happen if I put the restrictor pill back in? Will I need to get it retuned? I was told that the previous owner detuned it when it had the original TD04, then put the VF39 in, replaced the vacuum lines as well as removed the restrictor pill so that it would only run at wastegate pressure, then had it retuned for the VF39. Pretty much just asking where to go from here. Any advice helps
List of mods:
Cobb 2" up pipe
Gfb electronic boost controller
Atermarket (ebay) bov - (switching back to JDM OEM bpv)
Thanks in advance.