Silencer....what Is That?
Originally Posted by JRERACER26
SOMEONE IN THE FORUM STATED THAT HE REMOVED HIS SILENCER. I HAVE AN 04 4.6L IS THAT SOMETHING THAT I CAN DO? IS IT IN THE AIR BOX? THANKS FOR ANY INFO.

Yes, in the curved section of the air inlet. Takes some work to get it out, but can be done. Took me about an hour. At least on my truck, added a little bit of low growl when I get on the gas hard...
Look
When you take the black inlet pipe out you will see a rubber piece that goes into the fender. Pull that out.
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Originally Posted by 2006FX4
When you take the black inlet pipe out you will see a rubber piece that goes into the fender. Pull that out.
The silencer is in the actual intake where the "ribbed" part is and ends where the intake clamps onto the throttle body. It is glued inside of it, so get a flat head screwdriver and pry that sucka out. I used some tin snips to make cuts all around it so I could fold 'em in and it slid right out. Maybe 10 minutes after you get the edges loose. You must unseat the silencer on both ends, the interior and exterior of the intake.
This isn't the actual "silencer". The actual silencer is the dead air outside of the "silencer" between the walls of the intake.
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Originally Posted by JRERACER26
I TOOK THE INLET PIPE OFF BETWEEN THE AIR BOX AND THROTTLE BODY AND I DIDN'T SEE ANYTHING IN THERE. GUESS MINE DOES NOT HAVE ONE.

OK! CALL ME AN IDIOT BUT I DON'T UNDERSTAND. I DON'T SEE ANY RIBBED PIECE IN THE PIPE AT THE THROTTLE BODY OR ANYWHERE ELSE. WHERE IS THE FREAKING SILENCER!!!!!!!!!!!!
5.4 does not have same intake as 4.6.
Do a search and you will find some photos.
https://www.f150online.com/galleries...3552&anum=9347
Check this out. It's from Asinatra's photo gallery.
Check this out. It's from Asinatra's photo gallery.
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WHERE IS THE FREAKING SILENCER!!!!!!!!!!!!