on a vtec motor would it be wise to use aftermarket cams(jun,toda,skunk2)?
How will this perform? should i stay with stock cams?
What about the B18b & B20's should i get crower 62404 or stay with stock?

 

Unless you are running with high boost, i don't think cams are necessary

 

what about having a B16a1 and using ITR cams... since they are still within oem spec, WOULD THAT BE OKAY?

 

with turbo you want to run turbo cams, ones specifically made for turbo and not N/A like toda, Jun, blablabla. vtec loves its cam profile overlap, however turbo doesn't care for this too much, it can actually hinder the performance of a FI engine. Search around and see what kind of turbo cams you can find for your engine.

 

i would go with ITR cams or GSR cams