- Joined
- April 16, 2002
- Messages
- 3,313
- Reaction score
- 41
- City, State
- British Columbia
- Year, Model & Trim Level
- 93 4 dr 4x4 manual XL.
The two hoses operate a valve that allows air to be drawn in from near your exhaust manifold. You can feel under there and see where it hooks into the intake.
The connectors at the air filter box has a bi-metal switch that allows vaccuum to go to one hose or the other, which controls the valve. This is to get warmer air into the engine at startup, and cooler air as you drive.
I removed the hose connectors and installed the onto the end of the K&N cone filter. Then I ripped off the baffle in front of the filter intake tube. (behind the grill, next to your headlight) I figured any cool air that could get there would help.
The gain from going to a cone was awesome! I have not noticed any side effects, but haven`t been through some really hot weather yet.
The connectors at the air filter box has a bi-metal switch that allows vaccuum to go to one hose or the other, which controls the valve. This is to get warmer air into the engine at startup, and cooler air as you drive.
I removed the hose connectors and installed the onto the end of the K&N cone filter. Then I ripped off the baffle in front of the filter intake tube. (behind the grill, next to your headlight) I figured any cool air that could get there would help.
The gain from going to a cone was awesome! I have not noticed any side effects, but haven`t been through some really hot weather yet.