Two Charcoal Canisters

[Cassbo]

Ever since I purchased my R33 GTS-t way back in July 2007 I have been pondering why my car has the factory charcoal canister as well as an aftermarket item hooked up in series with it. Aftermarket item is located on the strut tower near the power steering fluid reservoir. After looking at many other Ricelines I have come to the conclusion that my Riceline appears to be the only one like this.

Why would another item be installed?

Should I remove the extra charcoal canister?

Should I leave it in so if I get asked to pop the bonnet I can say "Look! Two charcoal canisters! I care for the environment in my mid '90s turbocharged sports car 'n' shit! True story!"

I would supply pics, but being at work and the car being at home it isn't possible

Personally, I don't think it needs to be there so I may remove it for the extra 200g weight reduction.

Thanks

Cass

EDIT

The plot thickens...

Found a (poor) photo of my engine bay on facebook

To me it looks like it is hooked up in parallel and not in series like I originally said...

[Victory]

One of my GTS-T's had the same thing with the factory and an aftermarket charcoal cannister installed.

I would suggest that it was part of compliance where they simply installed a new aftermarket unit instead of going to the trouble of proving that the original factory unit was still working correctly.

I have since removed the aftermarket unit with no adverse affects.

[Cassbo]

If that is the case it makes pretty good sense

Might take it off this weekend, I don't expect the car to change at all... the only time I have had issues with charcoal canisters is when the purge control solenoid on my old Subaru shat itself, essentially jamming it open so the canister was venting to the throttle body all the time... made it idle like a pig in summer