Drivetrain jcw CAI mod question
jcw CAI mod question
i just installed the ALTA replacement filter and in the process i removed the flap, and also removed the motor and wires inside the air box. so my question is that since there are holes in the box for the wires to exit the box, do i have to plug those holes with something or is it ok to just leave it like that? also the vacuum hose outside of the airbox is now just floating and not attached to anything. is this a problem or should everything be alright?
ive also heard of people opening the extra hole that is blocked off on the bottom half of the jcw air box. can someone tell me how to open that hole or link me to a thread if it was already talked about thanks.
ive also heard of people opening the extra hole that is blocked off on the bottom half of the jcw air box. can someone tell me how to open that hole or link me to a thread if it was already talked about thanks.
1) Holes - if the holes open into the engine bay, then you're sucking in "hot" air through them... somewhat defeating the purpose of the CAI. The extent to which this matters depends on how big the holes are... if they're small, the real world impact will be negligible...
2) Vacuum hose - if just the stub of hose from the airbox is open, not an issue. If the rubber vacuum hose from the car is open (the part the airbox plugs into) then definitely don't leave that open!
3) Opening the other hole: There is a rubber grommet with a plastic "plate" glued inside. This is plugged into the bottom half of the airbox. You need to remove the bottom half (it just snaps out if you already have the top off) and then remove or cut the plastic plate out of the rubber grommet. then put the grommet back in place to keep hot engine air from being drawn in.
2) Vacuum hose - if just the stub of hose from the airbox is open, not an issue. If the rubber vacuum hose from the car is open (the part the airbox plugs into) then definitely don't leave that open!
3) Opening the other hole: There is a rubber grommet with a plastic "plate" glued inside. This is plugged into the bottom half of the airbox. You need to remove the bottom half (it just snaps out if you already have the top off) and then remove or cut the plastic plate out of the rubber grommet. then put the grommet back in place to keep hot engine air from being drawn in.
4th Gear
Joined: Nov 2007
Posts: 497
Likes: 0
From: Turkey
1) Holes - if the holes open into the engine bay, then you're sucking in "hot" air through them... somewhat defeating the purpose of the CAI. The extent to which this matters depends on how big the holes are... if they're small, the real world impact will be negligible...
2) Vacuum hose - if just the stub of hose from the airbox is open, not an issue. If the rubber vacuum hose from the car is open (the part the airbox plugs into) then definitely don't leave that open!
3) Opening the other hole: There is a rubber grommet with a plastic "plate" glued inside. This is plugged into the bottom half of the airbox. You need to remove the bottom half (it just snaps out if you already have the top off) and then remove or cut the plastic plate out of the rubber grommet. then put the grommet back in place to keep hot engine air from being drawn in.
2) Vacuum hose - if just the stub of hose from the airbox is open, not an issue. If the rubber vacuum hose from the car is open (the part the airbox plugs into) then definitely don't leave that open!
3) Opening the other hole: There is a rubber grommet with a plastic "plate" glued inside. This is plugged into the bottom half of the airbox. You need to remove the bottom half (it just snaps out if you already have the top off) and then remove or cut the plastic plate out of the rubber grommet. then put the grommet back in place to keep hot engine air from being drawn in.
4th Gear
Joined: Jan 2006
Posts: 353
Likes: 0
From: Rochester, NY
The holes for the wires and vacuum lines are tiny, they won't be a problem.
Yes, the vacuum hose you're talking about needs to be plugged or removed. If you follow it back towards the throttle body you'll see there's a Y in there, just take that out and use the long piece of tube to connect the throttle body directly to the bypass valve. (I think it's the bypass valve, been a while since I've done this.)
And the little hole on the bottom you can remove, no big deal. It's plugged in the US market due to noise concerns.
Yes, the vacuum hose you're talking about needs to be plugged or removed. If you follow it back towards the throttle body you'll see there's a Y in there, just take that out and use the long piece of tube to connect the throttle body directly to the bypass valve. (I think it's the bypass valve, been a while since I've done this.)
And the little hole on the bottom you can remove, no big deal. It's plugged in the US market due to noise concerns.
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