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redback 2.5 burble 

 

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 Post subject: redback 2.5 burble
Posted: Wed Jun 04, 2008 1:32 am 
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not asking how to fix this prob i kinda like it and mates think it make my car sound tuf. but when the engine is idling the exhaust has a burble to it as if it has a cam. the engine does not have a cam (well not that i know of) and no extractors, just redback 2.5 (cat back). a mate has an EL XR6 with redback 2.5 (cat back) extractors but no cam and his exhaust is nothing but a boring flat drone. a mate wanted to take my exhaust and stick it on his car to see if it made a difference to the sound but didnt bother because both the systems are the same.

So i was wanting to know some suggestions as to what could make my exhaust have a burble to it.


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Posted: Wed Jun 04, 2008 1:40 am 
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Could be a misfire, when mine was misfiring it sounded like a cammed 8 not just a stocker with exhaust.

Check plugs and leads.

 

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Posted: Wed Jun 04, 2008 1:42 am 
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plugs and leads seem fine. what about a compression test? would that tell me at all? I also replaced the spark plugs 3 weeks ago
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Posted: Wed Jun 04, 2008 9:05 am 
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Mine had a burble before I fitted the extractors and cat. After, it went away.

BenJ

 

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Posted: Wed Jun 04, 2008 1:43 pm 
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ive always had a burble on mine since i got my redback, and after i put the manual in it hunts all the time at idle now, like its cammed.. i like it lol

 

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Posted: Wed Jun 04, 2008 8:26 pm 
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check out if the cat is stuffed.
could be a vac leak around somewhere also.

 

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Posted: Wed Jun 04, 2008 8:49 pm 
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Your exhaust has more back pressure than your mates xr6 because your still running the tractor exhaust manifold and 2.25in cat. That's why it burble's more.

Cheers...

 

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Posted: Wed Jun 04, 2008 8:56 pm 
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When I had just a catback it had more of a burble at idle, fitted extractors and 'custom' cat, it got deeper, but sort of lost the burble. Its hard to explain - but I like it more now. Louder + lower wins.

 

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Posted: Wed Jun 04, 2008 11:53 pm 
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I'd be worried if you dont have a cam!!

 

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Posted: Wed Jun 04, 2008 11:57 pm 
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why worried? I'd say a P plater has driven this car before me. due to the after market sound system and the bent axles from the hectic drifting. so if i does have a cam would not surprise me.
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Posted: Thu Jun 05, 2008 12:17 am 
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Waggin wrote:
I'd be worried if you dont have a cam!!


haha nice one!

I wonder how long it takes....

 

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Posted: Thu Jun 05, 2008 12:19 am 
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sunbury23 wrote:
why worried? I'd say a P plater has driven this car before me. due to the after market sound system and the bent axles from the hectic drifting. so if i does have a cam would not surprise me.


i think you missed the irony in waggins post.

might be longer than we think krytox...

 

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Posted: Thu Jun 05, 2008 12:21 am 
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lol yup, f**k me and my slow brain :D
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Posted: Thu Jun 05, 2008 8:29 am 
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with mine, when i just had 2.5 catback, i got a really nice note as i lifted off as well, but alas that was gone with extractors :(

 

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Posted: Thu Jun 05, 2008 10:29 am 
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When i had the catback it did sounds lumpier then what it did when i have the the extractors and the highflow cat added. When the car revs it sounds heaps better with the full system though

 

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