My gas tank pressurizes to the point where vapors pour out of the gas cap's pressure relief. I can see the vapors around the gas door at stoplights. Removal of the cap clearly relieves a whole bunch of pressure.

The turbo kit was installed by Inline Pro and I have to wonder if they did not simply cap off the carbon tank vent system.

What do you guys do to vent the fuel tank?

Thanks

 

I just removed my charcol canister and left the line open to atmosphere under the car. No problems at all.