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06-11-2007, 08:15 PM
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iRegular crossmember
Join Date: Apr 2005
Location: in good 'ol WA
Posts: 621
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hey i was wonderin what is it that causes my exhaust to crackle and pop when im slowing down in gear? sometimes mine sounds like a rapid fire shotgun going off and although kinda cool also sounds a bit dodgy.
im running twin 2 1/4" exhaust straight through with hotdogs, is it the hot dogs? or is my engine running rich?
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1996 EF XR6 5 spd manual 2 1/2" manta S/S exhaust After market alpine/soundstream stereo 18" tyhpoons superlows waiting to go in.... spoilerless 
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06-11-2007, 08:19 PM
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... Fear it!
Join Date: Apr 2007
Location: Adelaide
Posts: 2,869
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im not possitive, but it has something to do with removing the muffler?
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06-11-2007, 08:22 PM
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iRegular crossmember
Join Date: Apr 2005
Location: in good 'ol WA
Posts: 621
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haha tru so its probably something to do with my exhaust, what if i remove my hotdogs louder or quieter?
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1996 EF XR6 5 spd manual 2 1/2" manta S/S exhaust After market alpine/soundstream stereo 18" tyhpoons superlows waiting to go in.... spoilerless
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06-11-2007, 08:25 PM
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Regular Member
Join Date: Dec 2005
Location: Victoria
Posts: 384
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06-11-2007, 08:25 PM
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LOW AND SLOW
Join Date: Sep 2006
Location: Geelong.
Posts: 2,644
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A set of Zoomies out the bonnet will fix it.
 Seriously though it sounds like a back pressure problem to me. Removing mufflers and replacing them with hotdogs can cause this.
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06-11-2007, 08:27 PM
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... Fear it!
Join Date: Apr 2007
Location: Adelaide
Posts: 2,869
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Quote:
just put ur muffler back on if you dont like the sound lolz
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Quote:
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06-11-2007, 08:38 PM
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FF.Com.Au Hardcore
Join Date: Jul 2005
Location: Melbourne
Posts: 6,854
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Just characteristics of an engine. The modern Ford BOSS engines do it.
To reduce/eliminate the crackling just add a balance pipe. If it is really bad you might need a bigger balance pipe like a Y or Kiss pipe rather than a H pipe. Or alternatively you can merge your twin 2 1/4" into a single 3" out the back which should also eliminate the crackle.
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~~~~~~~~~~~~~~ Rides (past and present) Current: 2004 Ford Falcon 5.4L 3v Barra 220, Manual Past: Mitsubishi Sigma (m), Toyota Seca (m), Toyota Seca SX (m), Toyota Vienta V6 (m), Toyota Soarer 4L v8 (a), BA XR8 ute (m), T3 TE50 (m), BMW Z4 (m) AFF motto - If contrary views trigger, please use ignore button. 
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06-11-2007, 08:42 PM
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iRegular crossmember
Join Date: Apr 2005
Location: in good 'ol WA
Posts: 621
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yeah nah this is how i brought it
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1996 EF XR6 5 spd manual 2 1/2" manta S/S exhaust After market alpine/soundstream stereo 18" tyhpoons superlows waiting to go in.... spoilerless
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06-11-2007, 08:46 PM
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Two > One
Join Date: Dec 2004
Location: Adelaide
Posts: 7,063
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crackeling is often lean overun
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1978 LTD - 408ci - 11.5@120.6mph - 2004 S4 - 4.2 - M6 - quattro - |
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06-11-2007, 08:47 PM
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AU2 XR8
Join Date: Oct 2007
Location: Perth W.A
Posts: 227
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i have an AU XR8 Series 2....Its a 2.5" through to a 2.5" hotdog in the middle then and the end it has a smaller hotdog about 10 or so inches long as a bit of a resignator. When i drop it down it burgles and cracks and pops. Most cars will a pretty straight through exhaust will do it when dropped down to high revs. Most cars with an exhaust do it.
Sounds wicked If it is backfireing and not 'poping' then you have a problem.
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WAX `EM AUTO DETAILING PERTH W.A 0406 553 226 |
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06-11-2007, 08:49 PM
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_Oo===oO_
Join Date: Dec 2004
Location: Australia
Posts: 3,305
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Is it really bad snap crackling?
I thought all 'sporty' V8s did it whether old or new, manual when slowing down in gear. Mine has a nice snap crakle pop when slowing down  : Then boot it and listen to the symphony :evil3: Then slow down, snap crackle pop... |
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06-11-2007, 08:55 PM
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BOSS Pilot
Join Date: Sep 2005
Location: on the loud pedal! Brisbane
Posts: 6,020
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My I6 AU EGAS ute never used to do it much but ever since my muffler got snapped off at the flange and I welded it back on it does it heaps when I drop it down to higher revs. Its 2.5" with a hotdog after the cat and muffler at the very back
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Black BAII XR8 Ute Blue SY Territory Ghia Quote:
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06-11-2007, 09:57 PM
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FF.Com.Au Hardcore
Join Date: Jan 2005
Posts: 2,728
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mine used to do it, but when i advanced my timing it went away, does anyone know why this is ?
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2015 FGX XR8 - 557rwkw on E85 KPM Street Fighter PCMTec Michelin Pilot Sport Cup 2 - 255/35/19 - 275/35/19 Shockworks Coilovers PITLANE AUTOMOTIVE & PERFORMANCE
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06-11-2007, 10:26 PM
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nou
Join Date: Oct 2007
Posts: 634
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06-11-2007, 10:45 PM
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Afterburner + skids =
 
Join Date: Dec 2004
Location: Skidsville
Posts: 12,110
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Must you "lolz" so much? It's quite painful to read. On another note, as others have mentioned, I thought that an amount of crackling was normal. How much is it doing it though?
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Speed Kills. So buy an AU XR8 and live forever. Oo\===/oO |
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06-11-2007, 11:24 PM
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Regular Schmuck
Join Date: Dec 2004
Posts: 5,640
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My BA XR8 crackles with a catback exhaust. I quite like it.
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07-11-2007, 12:13 PM
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With da Warlords
Join Date: May 2006
Location: Orange NSW
Posts: 1,781
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Yeah , I like my coco pops lol, sounds good
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You don't have to be faster than the bear, you just have to be faster than the slowest guy running from the bear. For Sale: Parachute. Only used once, never opened, small stain. Windsor Warlords AU III XR-8220  300+ rwhp of Manual fun XR50T Ute - 300rwkw (give or take depending on the day)
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07-11-2007, 12:55 PM
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FoMoCo Fan
Join Date: Mar 2005
Location: BunVegas, W.A.
Posts: 276
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Its unburnt excess fuel , simple as that !
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07-11-2007, 02:59 PM
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FF.Com.Au Hardcore
Join Date: Mar 2006
Location: Adelaide
Posts: 2,343
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Yep, to much fuel on deceleration.
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07-11-2007, 03:10 PM
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Whipple Induced
Join Date: Jan 2005
Location: WWW
Posts: 4,338
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Quote:
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07-11-2007, 06:26 PM
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FF.Com.Au Hardcore
Join Date: Feb 2007
Location: Cattai, Sydney
Posts: 7,701
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even the ford I6 barra's can cackle and pop on downshifts, Rugers car, Pacemakers, 3inch cat and Xr6T pipes from the cat back would do it.. and the guys who have replaced the centre mufflers with resonators sound even better
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1992 EBII Fairmont Ghia 4.0l <---Click for the Gallery! Insta@mooneye_ghia White on bright red smoothies with thick whitewalls. Cruising around to some rockabilly |
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v8 exhaust crackle
Linear Mode
