Unless really bad they will usually only burn oil when cold. Simple solution warm car up before driving.
Also generally most shops are going to charge for taking the head off since that is the procedure is and that's what the labor calls for. Not really worth it if the heads going to come...
ngk coppers pn 4644, or ngk platinum, or ngk iridiums. Use the coppers for high hp/boost levels.
Also did you set the ign timing when you put the cps in?
And the codes are either for afm or its wiring.
there is also all the vendors on here and toyota.
What specifically are you looking for?
dm has pretty much everything you need aside from custom things.
Blocking that off is not going to solve your issue. Shouldn't cap it off either. If the hose is bad replace it. Also it's not a valve. It's just a manifold vac port.
Start with checking for stored codes.
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