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Old 04-16-2019, 03:22 PM   #126
Scuby04STi
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Quote:
Originally Posted by PDXREALTOR View Post
I never thought about it too hard but, I think that line goes back to a charcoal canister or two and may even connect to the gas tank.

I just know i got the smell of gas after removing all that crap under the hood, and, capping that line made it go away.

There is a thread on here about deleting it all from the hood back to the tank.
Well I deleted the whole system but for reference there "should" be a breather on that line. I personally put the breather directly off the section at the rear of the car:


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Originally Posted by Scuby04STi View Post
Sorry for the odd picture, it was the only one that had the breather in it that I have.
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Old 04-16-2019, 03:59 PM   #127
PDXREALTOR
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If you leave the charcoal cans in place, don't they act as a breather?
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Old 04-16-2019, 04:45 PM   #128
Turpid Porpoise
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Quote:
Originally Posted by PDXREALTOR View Post
If you leave the charcoal cans in place, don't they act as a breather?
Not that I’m aware of, they are just the “filter” for the evap system. The line to your intake manifold was the only vent and is now capped off. I just ran a 5/16 fuel line from the hard line down to the frame rail just above the front control arm. That way the pressure vents under the engine bay and gets pulled out under the car
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Old 04-16-2019, 05:16 PM   #129
Scuby04STi
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Originally Posted by PDXREALTOR View Post
If you leave the charcoal cans in place, don't they act as a breather?
No, they use that hose you capped off to breath. The canister is to minimize the smell of fuel. Thank you EPA, lol. You can leave them on, take them off it doesn't matter just make sure the fuel tank has some type of vent connected to it.
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Old 04-16-2019, 05:17 PM   #130
Waddlz
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if you remove that/cap it. will that stop the "not able to fill tank all the way up" problem? I have all my OEM stuff still but currently the pump clicks off at right above 3/4 a tank
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Old 04-16-2019, 05:24 PM   #131
Turpid Porpoise
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Originally Posted by Waddlz View Post
if you remove that/cap it. will that stop the "not able to fill tank all the way up" problem? I have all my OEM stuff still but currently the pump clicks off at right above 3/4 a tank
No, it is most likely not a solution to your issue. Deleting the Evap system can cause issues with filling up if done incorrectly.
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Old 04-16-2019, 05:41 PM   #132
Waddlz
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Originally Posted by Turpid Porpoise View Post
No, it is most likely not a solution to your issue. Deleting the Evap system can cause issues with filling up if done incorrectly.
ah ok. just curious.
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Old 04-17-2019, 09:32 PM   #133
PDXREALTOR
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Thanks guys. I suppose the obvious answer to why would I want to vent the tanks is, BOOM. Also I guess there are vacuum issues that could become problematic

I keep my car in the garage which is finished and doubles as my gym, so venting it is kind of a PITA, no matter where the vent is.

The smell of fuel is annoying while working out. I don't have any issues while filling up.

Edit - I've never had a problem filling up, or with fueling, or anything else while having that line capped. I did read for quick second how pressure or vacuum could be problematic, but I've had that capped for months without issue. Even so, I removed the cap just in case.

Last edited by PDXREALTOR; 04-25-2019 at 04:20 PM.
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Old 04-25-2019, 04:23 PM   #134
PDXREALTOR
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I think my gauge and its included relay will work for map switching without adding any relays.

Here's the diagram I came up with - where should I put the ground off the TGV? Does the rest look OK?

ETA - I just tested the gauge and its fail-safe relay (as wired in the diagram below) with a 9 volt battery. Seemed to work as it should - put the gauge in fault mode and I get 0 volts - put the gauge in non-fault mode and I get 9 volts.

I think adding in a fuse on the 5 volt input line to the ECU is a good idea.

Now I just need confirmation on where to put the ground off the TGV plug...??




Last edited by PDXREALTOR; 04-25-2019 at 06:16 PM.
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Old 05-12-2019, 08:37 PM   #135
brecks
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Java Black Pearl

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Hey PDX, what made you decide to copper coat the OEM gaskets?
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Old 05-13-2019, 08:06 PM   #136
PDXREALTOR
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Hey PDX, what made you decide to copper coat the OEM gaskets?
Builder does it.
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Old 06-07-2019, 09:01 PM   #137
damion1984
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Default Fuel tank vent

The charcoal canister should have a line from the tank a line to the engine with a solenoid and a vent that should have a solenoid on it, when the system purges the canister it will suck fresh air through the charcoal and pull the fumes into the intake in stock configuration, if you cap the line at engine end and the ecu still tries to vent then it will equalize pressure in tank with atmosphere at that time rather then adding slight vacuum through the canister at whatever pressure it takes to suck air through the charcoal
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Old 06-07-2019, 09:12 PM   #138
PDXREALTOR
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Originally Posted by damion1984 View Post
The charcoal canister should have a line from the tank a line to the engine with a solenoid and a vent that should have a solenoid on it, when the system purges the canister it will suck fresh air through the charcoal and pull the fumes into the intake in stock configuration, if you cap the line at engine end and the ecu still tries to vent then it will equalize pressure in tank with atmosphere at that time rather then adding slight vacuum through the canister at whatever pressure it takes to suck air through the charcoal
Don't you work for Steve / s&s?
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