I've gotten a couple PM's from people wondering how to properly delete the charcoal cannister. Here is how it's done (or at least how I did it
):
**DISCLAIMER: THIS MOD IS INTENDED FOR OFF-ROAD USE ONLY. IT DELETES EMISSIONS COMPONENTS. EVEN IF YOUR CAR IS EMISSIONS-EXEMPT FOR YOUR AREA, CHECK YOUR STATE/LOCAL LAWS- IT STILL MAY NOT BE LEGAL TO DELETE YOUR EMISSIONS COMPONENTS/SYSTEM(S).
1. Locate your charcoal cannister:
2. Remove all hoses from the cannister, trace them back to their sources & cap off nipples using 4 or 6mm vacuum caps.
**NOTE: Your EGR system is useless at this point, so you may as well get rid of it as well
3. Using 10mm socket or wrench, remove cannister and bracket.
4. Jack the rear of your car & place jack stands under the subframe or jacking pads.
5. Locate the 4 hardlines running along the floorpan inboard of your RH frame rail. One is your rear brake line that goes to a splitter to each caliper, two are larger lines- these are your fuel feed/return line.
The last smaller line (the most inboard IIRC) is the evap line from the charcoal cannister. You will see a rubber hose coming off of it going to a check valve (pictured below). The check valve is bolted to the underside of the car with 2 10mm bolts:
**NOTE: THIS IS A ONE-WAY CHECK VALVE. ONCE YOU REMOVE THE VACUUM LINES FROM THE CANNISTER IN THE ENGINE BAY, THERE IS NO LONGER VACUUM ON THE FUEL TANK TO RELIEVE NEGATIVE PRESSURE CAUSED BY FUEL PUMP SUCTION, OR IN-TANK FUMES. IF YOU DO NOT REMOVE THE CHECK VALVE VACUUM LINE & VENT THE TANK TO ATMOSPHERE, IMPLOSION OR EXPLOSION COULD RESULT!!!
6. Remove the check valve if you desire to get rid of all plumbing completely, or simply disconnect the 1/4" hose going from the check valve to the fuel tank.
** If you did not remove the tank from the car, the evap hose nipple can be a real PITA to get to:
7. Remove the hose from the evap nipple on the tank, or install a male/male 1/4" barb fitting into the hose (from check valve to fuel tank) to extend it if you left it connected.
8. Once you have extended or replaced the hose with a longer length, run it to a location that is generally safe from debris/obstructions. I ran mine toward the back of the tank along the lip:
9. Cut hose to desired length, put a small filter on the end to keep debris & critters out (filters are in lawnmower/small engine section of any auto parts store); and secure with adel clamps or zipties.
At this point, you are done. Remember, the tank NEEDS to be vented in some way, shape or form!!!
**If you left the hardline in place, place vacuum caps over both sides to keep debris/critters out... Or just to be sure no residual fumes will find their way into the engine bay. Removing the hardline is self-explanatory; therefore not covered. For those of you with no clue how to get it out; DO NOT do anything beyond step 1
--Mike