hi, i bought a 97 ex and swap all my ls vtec turbo, sometimes i feel a strong
gas smell. I check for leaks and nothing then i realize the car not have purge
system the hard line is plug with a screw, when the car is running and shaking
and you stop at a ligth the smell it's hard. Only thing on mind is route a 3/8"
line to the turbo inlet but need to fab a pipe cause i use the filter direct on the turbo.

 

mines ran this very same way (wire and brake tuck)and i dont have any harsh gas smells. i dunno why yours would be any different. mines turbo as well.

 

my guess is the screw isn't hold all the gases it's safety put a ruber plug with
a clamp.

 

i actually do not have mine plugged i have it still venting to outside air. maybe try that and see how that works