yes at high doses caapi is def psychedelic..at 50-100g it can be for sure..or at like 50g+m of harmalas..depending on how they are used in ratio or what harmala you are using etc..
I would say extract 50g of caapi with your tek, and then take all of the harmalas yielded. I have no idea what else could be in caapi or what is going on there with the reported 2% yields..but I can assure you that caapi def does get psychedelic, and 50mg of pure harmalas sublingually should do it..sometimes 50g of vine will floor me, other nights I can drink 80-90g before it gets that deep..but 50g is like where it really starts.
This has been true for me so far with white vine, red vine and cielo vine.
I never weigh my rue extracted harmalas anymore, I just put a lump of maybe 50mg under my tounge to start, and even at that dose I have had light dreamy psychedelic effects.
Long live the unwoke.