what to do with the charcoal canister with a Rob tune

[turbo wagon]

I am installing the charcoal canister on my turbo swap and with the Rob tune ecu the purge control is depinned. I have the turbo canister and the NA canister still. How should I hook up the canister?
Derek

[robertpaige]

You don't even need to hook up the canister. It can can be removed and the vent lines can stay open. That's what I did to eliminate lines in my engine bay.

[kimokalihi]

I believe the wrx ecu did not have a purge solenoid so it doesn't even function. The canister is pointless. I remove the lines up by the left strut tower and put a filter on it to keep debris out.

[James614]

My swap had the lines to fit an N/A canister, so that's what i did. But like everyone else said, the ecu doesn't care so you can just vent it.

[Legacy777]

Since the vent lines go back to the gas tank, I would strongly recommend not just leaving them "open" to the atmosphere since they'll be venting raw gasoline vapors. I had my vent lines capped for a while, which if you don't plan to run the charcoal canister, that's probably what you should do. The issue with that is excessive pressure builds up in the tan.

You could leave the charcoal canister there, bypass the canister purge solenoid and just run the vacuum line directly into the throttle body vacuum line.

[91Beater]

Our cars use a recirculating type system that sends fuel back to the tank. As the fuel circulates through the system and it goes back to the tank, it warms up and builds pressure.

Normally, it exhales through the canister which lets it breath out while capturing the gasoline vapor in it. When the car is running, some air is breathed through the canister to regenerate it. I'm not sure if the amount of exhaled fuel vapor amounts to a fire/explosion hazard if you were to just let it freely breath out(which can also be in your garage).

[turbo wagon]

Thanks for all the replies,

what I think I will do is bypass the purge valve and use the vacuum line from the top of the throttle body with the NA canister.

only more question about the canisters- what does the third line on the turbo canister do?

[Legacy777]

The third line is an auxiliary purge line to draw in vapors when the car is under boost. I think Subaru did this to be "extra" conservative on the emissions. I am using the two port canister on my turbo setup and it's been fine.

[turbo wagon]

So I relocated the canister to where the wiper fluid is. I never used that anyways.

[turbo wagon]

I am having a hard time with posting pictures. A little help?

[James614]

You cant "post" pictures directly to the forum. You must upload them to a third party image hosting sevice like photobucket and copy the URL to the pic into your post.

[turbo wagon]

[turbo wagon]

Then I put the turbo coolant box and my boost control solenoid in that area. this is keeping my engine bay more clean.

[Legacy777]

I fixed your original picture.

One thing to note about your coolant reservoir location, it really needs to be at the highest spot of the cooling system so air bubbles will go to that and then can escape. Additionally, with it in that location I'm not sure the convective cooling to the turbo will be effective or as effective.

[czei]

Thanks for all the replies,

what I think I will do is bypass the purge valve and use the vacuum line from the top of the throttle body with the NA canister.

only more question about the canisters- what does the third line on the turbo canister do?

I've been looking at the diagrams and can't figure out where the heck the purge valve is located. Any hints?

Thanks,

[Legacy777]

It's under the passenger side intake valve runner

You can see pictures of it in these pictures. It's the one with the blue plastic connector.

http://main.experiencetherave.com/subar ... s/ej22t/22