Crackling exaust

Reply Subscribe

Thread Tools

Search this Thread

Nov 5, 2007 | 06:26 PM

BURNSTOUGHFORD

Thread Starter

Posting Guru

Joined: May 2006

Posts: 2,486

Likes: 0

From: Iowa

Crackling exaust

any of you fellas suppose that the tune on an engine could affect the crackling of the exaust... it never used to with my 4.6l but now when i rev up my untuned 5.4l it crackles alot as it derevs...not when reving up but when i let out of it....

hopefully i made this somewhat clear.... I have all my cats and a 1-2 flowmaster 50 series

Nov 5, 2007 | 06:35 PM

Bobby82490

Posting Guru

Joined: Dec 2006

Posts: 1,466

Likes: 0

From: N. Fort Myers,FL

I know my truck does it when i rev it up and when it revs down it cackles.

Nov 5, 2007 | 08:10 PM

BURNSTOUGHFORD

Thread Starter

Posting Guru

Joined: May 2006

Posts: 2,486

Likes: 0

From: Iowa

what exaust you running...cause if you dont have a muffler it will do that... i do and it never seemed to do it as much or as loud...

Nov 6, 2007 | 04:46 AM

Bobby82490

Posting Guru

Joined: Dec 2006

Posts: 1,466

Likes: 0

From: N. Fort Myers,FL

I dont have a muffler now right now. Its weird sometimes ill rev it up and it sounds great when it idles down but there are other times when it cackles alot.

Nov 6, 2007 | 07:23 AM

duggyb

More Turbo

Joined: Apr 2007

Posts: 562

Likes: 0

From: YYC

that is completely normal....it is called back rap..and it is the exhaust that has travelled down the pipe...but never got out the end before you let off so as the pressure sucks it back the way it came...it crackles or pops....this is where mufflers and converters come in....they quiet this noise to nothing.

THNX
Duggy