Air box silencer?
Thread Starter
CF Veteran
Joined: Sep 2009
Posts: 6,322
Likes: 6
From: Summerville, Ga
Year: 1995
Model: Cherokee
Engine: 2.5 4 cyl.
k someone told me if i removed the silencer from the airbox that it would make my jeep have a lil bit more HP and breathe better. Anyone know what im talking bout? is it a good idea to do this, please only answer if you know what im talking bout or have done it before. No offense i just dont want to be discouraged by someone who doesnt know the situation
CF Veteran
Joined: Mar 2009
Posts: 28,068
Likes: 6
From: Tenn. and Mich.
Year: 2004
Model: Grand Cherokee
Engine: 4.7L V8
The silencer fits in the connection between the airbox and the hose going to the throttle body. If removed it makes more noise and you might get a 1/2-1 HP increase at full throttle.
CF Veteran
Joined: Mar 2009
Posts: 28,068
Likes: 6
From: Tenn. and Mich.
Year: 2004
Model: Grand Cherokee
Engine: 4.7L V8
It's not on all vehicles. If yours is so equipped, removing it will have no negative results except for the louder sound of the air rushing through. Kinda' like an old 4-barrel kicking in with no air filter installed. WOOOT!
Trending Topics
CF Veteran




Joined: Dec 2008
Posts: 1,228
Likes: 30
From: Penns Grove, NJ
Year: 1995
Model: Cherokee (XJ)
Engine: 2.5 4 cyl
I took mine out a few months ago. 1 - you wont notice any HP gain - it such a small amount. 2 - you also wont notice any more noise from the intake. Then again, the weather stripping from my jeep is gone so I pretty much only hear the woosh from my doors. But honestly....dont wast your time, you wont notice anything.
CF Veteran
Joined: Mar 2009
Posts: 28,068
Likes: 6
From: Tenn. and Mich.
Year: 2004
Model: Grand Cherokee
Engine: 4.7L V8
Dan
Senior Member
Joined: Mar 2009
Posts: 688
Likes: 0
From: Owensboro, Ky.
Year: 1998
Model: Cherokee
Engine: 4.0 liter
Ok thank you Dan but what about if someone gets a Cold Air Intake system and it sucks in more air then the Stock Air Intake, then what? Will they have to change the fuel to air ratio? What is best- to much air to to little gas or to little air to to much gas
Senior Member
Joined: Sep 2009
Posts: 575
Likes: 2
From: Virginia
Year: 2000
Model: Cherokee
Engine: 4.0 inline 6
I think that opening is plenty large. You've got a system that is designed to use a set amount of fuel for a certain amount of air, and the intake-head-valves-cam-exhaust will only allow a certain amount of flow. If you change any one of those variables without changing them all you're wasting your time and money. IMO
Dan
Dan
Senior Member
Joined: Mar 2009
Posts: 688
Likes: 0
From: Owensboro, Ky.
Year: 1998
Model: Cherokee
Engine: 4.0 liter
Thats what I do anyways. My foot is to the floor with the pedal because my throttle valve is way off. You can pop my hood and find my TV cable- Throttle Valve Cable- and pull it and see that it will pull about an inch and then stop. Thats how bad my TV Cable is off and its sucking my gas down.



