Mods are happening again, and I need some tech assistance/suggestions...>>>
I don't think you gain any HP from either of these. The spacer is like the FMIC and helps to preserve power by controlling heat. The DV relocate also helps with heat to some degree (recirculating cooled air instead of straight out of the turbo) but helps more with responsiveness than anything else.
Do your boost gauge, drive for a week. Do the DV relo, drive for a week. Etc.
Doing it like this will give you a better idea what each mod does.
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