air silencer make a real difference?

jrc_03_gt · Feb 3, 2004

Does the removal of the air silencer really make that much improvement? My only mods are a K&N air filter and a weld in of 40 series flowmasters. Should I just leave it alone? This stang only has 1200 miles on it.

KaPPaBaLL · Feb 3, 2004

it'll get little more air but you'll hardly gain anything. Take it off just for the "thought" of it. Who knows, maybe you'll think you're going faster without it and drive even better. lol

Beau · Feb 3, 2004

well its a silencer..so..your car won't be as silent. thats about it.

jrc_03_gt · Feb 3, 2004

It does not sound like its worth the trouble.

jadesville · Feb 3, 2004

jrc_03_gt said:
It does not sound like its worth the trouble.

its one bolt and some tugging, the whole thing is up for debate, it helped some people, for others it didnt...

xenon · Feb 3, 2004

On the Kenne Bell website they state.. For every 10 degree increse of heat you loose 1% of the horepower... The Fender is about 70 degrees and the heat under the hood is over 200 so do the math.

menasci · Feb 3, 2004

Just trim it.
Cut the end off so it just goes inside the fender hole about 1/2 inch.
This makes a larger opening and still draws in cool air.

93cobraxx · Feb 3, 2004

i picked up 4.5 hp and 5 ftlbs on the dyno from removing the air silencer, on a stock car ,1600 miles

Beau · Feb 3, 2004

93cobraxx said:
i picked up 4.5 hp and 5 ftlbs on the dyno from removing the air silencer, on a stock car ,1600 miles

MT1083 · Feb 3, 2004

I don't think I would do it. All your doing is sucking in hot air.

01GT eibach · Feb 3, 2004

5.0 Mustang magazine dyno'd a stock 4.6L and got a couple of rwhp in the upper revs, but lost a bunch of torque down low. Even before reading that, I decided to keep mine the way it is. ... just one opinion ...

93cobraxx · Feb 3, 2004

i didnt lose any low end, picked up a solid 5 ftlbs all the across the board, dynoed 236 hp and 280 ft lbs SAE on a stock car with air silencer removed

2013 Geee T · Feb 3, 2004

I did it on my 01 and didnt notice anything. I trimmed it on my 03 and didnt notice anything either.

StngStr · Feb 3, 2004

xenon said:
On the Kenne Bell website they state.. For every 10 degree increse of heat you loose 1% of the horepower... The Fender is about 70 degrees and the heat under the hood is over 200 so do the math.

When you're driving down the road in 70 degree weather, the air under the hood where the silencer was is not 200 degrees. The air is so turbulent under there (from the fan and from driving) that it's at most 10-20 degrees warmer. I'm sure if you were just sitting there in traffic it could get up to 200 degrees under there, but when sitting there how much hp do you really need?

jrc_03_gt · Feb 3, 2004

I think I will leave mine in for now.

decoy562 · Feb 3, 2004

I took mine out, and it idled badly, so I put it back in and left it there, no problems. I don't think its worth it, you don't really gain anything from it.

302cobra97 · Feb 3, 2004

I bought my cobra from a private seller and it was already removed and i forgot to check for it when i bought it. Now i wish that it was still in or i could get it back after reading this page.

jas142 · Feb 3, 2004

I felt a small gain, and its a *tiny bit* louder. It takes like 2 minutes to take it out and it goes back in just as easily.. take it out and see if you like it. If you don't, put it back in. On another note, for people WITH the silencer removed: Any gains to be had from enlarging the hole on the airbox? Theres only a small area for air to flow in.

WRXracer · Feb 3, 2004

yeah

went to the track with my airsilencer in ran 14.3 like 4 times.. then I took it out and the rest of the nite I ran 14.0.. then next few times got it to 13.8..

Islander03GT · Feb 3, 2004

93cobraxx said:
i picked up 4.5 hp and 5 ftlbs on the dyno from removing the air silencer, on a stock car ,1600 miles

I'd like to see the dyno graph for it.

And dropping 3/10ths after removing it could also be because it was getting later and the air temp was lower.

I like free mods as much as the next guy but I'm always skeptical about the gains that people produce on them. I'm gonna test the silencer theory at MDD7 on Sunday the 22nd... mid day racing so the temp should be relatively constant.

air silencer make a real difference?

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