Remove Intake Silencer on 4.6?

[MrGtStang]

Hello, Ive Been in Mustangs for Longer then I Could Drive But This is My First 4.6,
So i feel like a kid again with this questions im imbarresed LOL..

Does removing the Air Intake Silencer On the 4.6 Help like it does on the 5.0's?
Cause i THINK I Heard that it could hurt performance Rather then Help it?

So Hook a New 4.6 Guy with some Info..

wow i feel 9 years old again LOL

2001 Bullitt

[T_Bone]

Well, you could always take it off and try it. If you don't like the results, then put it back on. It only takes a few minutes.
I removed it on my GT and Cobra. If nothing else, it sounds cool at WOT, hearing the air whistling into the intake, heh.
Some ppl claim to have dyno'd 1-2 hp higher with it removed. I've never heard of anyone losing power without it.

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T-Bones 1997 Cobra (http://web.ndak.net/~topel)#6342 born 6-11-97
Wht/blk, Pro 5.0,FRPP 4.56's, aluminum driveshaft, FRPP throttle body, C&L 80mm MAF, K&N, Steeda U/D pulleys, Steeda timing adjuster, Flowmasters, s/f connectors, FRPP pro springs, BBK caster/cambers.
http://web.ndak.net/~topel/TBone1.jpg
My old 96GT (http://www.mustangworld.com/ourpics/News/select654.htm)

[blue00gt]

I've seen dyno results that indicate a 2-3 hp loss when you remove the intake silencer on a 99+ GT without changing to a cold air induction.

[gorgasb]

I have a 97 4.6, I just took mine off and to me, it felt a bit faster. I could really tell the difference!

[Red Mustang Gt 46]

Haven't seen a loss but I can tell you with a removed silencer or a modified silencer (mine is modified) you will the notice the RPMs climb quicker. Prior to modifying my silencer, it felt like the engine was just making noise, after modifying it...VRRRRRROOOOMMMM!! I cut 3" off the end of mine and placed a 4" tube in it to extend into the fenderwell.

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1998 Mustang Gt
C&L 80mm
Steeda Underdrives
Steeda Tri-Ax
Magnaflows

[blue00gt]

I just noticed that you have a Bullit rather than a normal '01 GT, so it's hard to say. According to the magazines, removing the intake silencer was always worth a couple horsepower on any '86 and up car until they tried it on the '99 and up and lost a couple horsepower. Since the Bullit has a different intake setup, it's hard to say. I'd try it and see.

[Rocket 99GT]

no difference found.

.............................................99GT…
rear sway bar (adjustable)
rear lower control arm
traction bars,
tokiko struts illumina 5 position,
tokiko shocks,
caster camber plates
racing lower springs
3:73
strut tower brace
underdrive pulleys
Michelin “pilot XGT-Z4. 245x17
No silencer
No spare tire

[Mustangmom2k]

Hello, Ive Been in Mustangs for Longer then I Could Drive But This is My First 4.6 Me, too! http://www.mustangworks.com/msgboard/biggrin.gif

Took mine off. I have never dynoed my car, so I can't tell for sure. However, the butt-o-meter felt a slight increase in giddy-up. I am actually planning on puting it back on, now that I know the feel of my car, just to see if there's any difference.

I have read a LOT on this, and there is much controversy. Personally, I go with what I feel in the seat of the pants.


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"Back in the day" owned a '66 289 and later a black '68 289.
Current - '00 white GT w/K&N and Flowmasters. Otherwise bone stock.
ET-13.952@98.87 RT-.507 60'-2.09
Son #1 - '87 GT stock
Son #2 - '89 LX 5.0 stock



[This message has been edited by Mustangmom2k (edited 05-18-2001).]