87 N/A rx7 questions....?
 

i have been so into my s5 that i pretty much forgot everything i need to know about the s4's. first off:

i have the hesitation around 3800-4000. how do i reground the pressure sensor harness?

secondly:
all emissions are removed but i want to keep the charcoal canister because it wreaks of fuel vapors when i drive. i have it set up like so:

from fuel tank to canister.............should i put a pcv valve inline from the canister to the crankcase?