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exaust sound question 

 

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 Post subject: exaust sound question
Posted: Tue May 04, 2010 12:08 pm 
Parts Gopher
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sorry if this isnt the right place 2 post this i looked for a similar topic but couldnt find any.
this is probably a simple question to answer

im wanting 2 know how to get a particular sound out of my car, the sound being the kind of crackling almost like backfiring on deceleration like a very lumpy idle but it rumbles really aggresivly. i love the sound haha despite if its bad for the car or not.

if any 1 can help me i appreiciate it alot , sorry if the details are confusing only words i could put to the sound lol
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 Post subject: Re: exaust sound question
Posted: Tue May 04, 2010 1:34 pm 
Getting Side Ways
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what about my sound, http://www.youtube.com/watch?v=dCq831Pcd9g

 

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 Post subject: Re: exaust sound question
Posted: Tue May 04, 2010 1:51 pm 
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ill check both of them asap, just cant while at school youtube blocked =(
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 Post subject: Re: exaust sound question
Posted: Tue May 04, 2010 1:55 pm 
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nathanwillox wrote:
ill check both of them asap, just cant while at school youtube blocked =(


shouldn't you be studying then?

Also the crackling/lumpy noise can't just be made from changing the exhaust. I think you want the V8 crackling noise...if that's the case you will first need a V8 if you haven't got one. Then need a lumpy cam and an exhaust to suit.

Not going to get the same effect out of a I6.

 

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 Post subject: Re: exaust sound question
Posted: Tue May 04, 2010 3:36 pm 
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phongus wrote:
nathanwillox wrote:
ill check both of them asap, just cant while at school youtube blocked =(


shouldn't you be studying then?

Also the crackling/lumpy noise can't just be made from changing the exhaust. I think you want the V8 crackling noise...if that's the case you will first need a V8 if you haven't got one. Then need a lumpy cam and an exhaust to suit.

Not going to get the same effect out of a I6.

Wrong.

I had an AWESOME cracking/lumpy sound on my i6 before I had it tuned. It was there since I converted to manual, possibly a side effect of an auto ECU with resistor mod? When I had it tuned I also switched to an EL manual ecu and cracking effect is gone :(

 

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3: Nissan 180sx.sr20det, ~180rwkw.Lotsa mods,0-100 in 5.2secs.crashed into pole :(
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 Post subject: Re: exaust sound question
Posted: Tue May 04, 2010 3:51 pm 
Getting Side Ways
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do you mean the burgle kinda noise? or an actual crackle? holden v8's do it and it sounds horrid.
my old ea used to do the burgle kinda noise on when i took my foot off, and that just had standard exhaust but with a hotdog.
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 Post subject: Re: exaust sound question
Posted: Tue May 04, 2010 3:58 pm 
Getting Side Ways
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My old EF II XR8 used to do it with a Lukey 3" straight through in Closed Loop first thing in the morning. Went away once it went open. Again..... the point being XR8
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 Post subject: Re: exaust sound question
Posted: Tue May 04, 2010 4:55 pm 
Stock as a Rock
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i mean e.g. get to about 4000rpm, leave it in gear but take foot off accelerator. makes an epic 'popping' sound, sounds like an old muscle car. probably due to s**t afr's lol, since after tune it doesn't do that anymore...

 

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1: Mum's car: ED XR6 wagon.zorst,stereo
2: My cars: Holden Monaro CV8-Z 2005. ls1 v8 :)
3: Nissan 180sx.sr20det, ~180rwkw.Lotsa mods,0-100 in 5.2secs.crashed into pole :(
4: EB2 Fairmont. 5spd,2.5" zorst,hi-flow cat,extractors,wade977b,j3, plus a 152dB 200psi train horn

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 Post subject: Re: exaust sound question
Posted: Tue May 04, 2010 5:02 pm 
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you want the overrun crackle crackle crackle noise when you come off the throttle? Not from your I6 mate, wrong engine config. the I6 is a smooth motor and will not bang and f@rt when you pull your foot off the throttle, maybe a bad tune and rich as hell will start to achive what you are talking about, but, No.

 

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 Post subject: Re: exaust sound question
Posted: Tue May 04, 2010 5:24 pm 
Smokin em up
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Yes you can have the burble on decel, :roll:

Its caused from unburnt fuel entering the exhaust. Thats why a Auto ECU with a resistor mod in a manual car will make it happen. Auto's are designed to put a tiny amount of fuel in at all times (otherwise the car would stall) whereas manuals can shut the fuel off completely. so yea it can happen..

 

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 Post subject: Re: exaust sound question
Posted: Tue May 04, 2010 5:40 pm 
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Mhgill wrote:
Yes you can have the burble on decel, :roll:

Its caused from unburnt fuel entering the exhaust. Thats why a Auto ECU with a resistor mod in a manual car will make it happen. Auto's are designed to put a tiny amount of fuel in at all times (otherwise the car would stall) whereas manuals can shut the fuel off completely. so yea it can happen..

Yes that would explain it. As when I got tuned I also got a manual EL ECU. Which made it stop :( You can buy me ED auto resistor-modded ecu if you want hehe

 

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1: Mum's car: ED XR6 wagon.zorst,stereo
2: My cars: Holden Monaro CV8-Z 2005. ls1 v8 :)
3: Nissan 180sx.sr20det, ~180rwkw.Lotsa mods,0-100 in 5.2secs.crashed into pole :(
4: EB2 Fairmont. 5spd,2.5" zorst,hi-flow cat,extractors,wade977b,j3, plus a 152dB 200psi train horn

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 Post subject: Re: exaust sound question
Posted: Tue May 04, 2010 6:29 pm 
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paul09 wrote:
Mhgill wrote:
Yes you can have the burble on decel, :roll:

Its caused from unburnt fuel entering the exhaust. Thats why a Auto ECU with a resistor mod in a manual car will make it happen. Auto's are designed to put a tiny amount of fuel in at all times (otherwise the car would stall) whereas manuals can shut the fuel off completely. so yea it can happen..

Yes that would explain it. As when I got tuned I also got a manual EL ECU. Which made it stop :( You can buy me ED auto resistor-modded ecu if you want hehe


So why did my car sound smooth during acceleration, changing gears and deceleration with the resistor trick? Now I have a J3 chip, but it still didn't make much of a difference besides stopping the car from stalling.

I'd get my engine checked if it was making a crackling sound everytime I put my foot off the accelerator.

 

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phongus = Post whore 2006
EL XR6 motor, EL ECU + J3 chip, WADE 1673 Camshaft, 3" S/S intake, Pacy 4480, 2.5" Hi flow cat, 2.5" Lukey exhaust.
Max Power = 144.6 rwkw (03/05/2008)

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 Post subject: Re: exaust sound question
Posted: Tue May 04, 2010 6:44 pm 
Getting Side Ways
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theres been few people lately that would rather a noise that sounds "cool" than a healthy car.
bit silly, your surpose to mod your car to make it better not worse
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 Post subject: Re: exaust sound question
Posted: Tue May 04, 2010 7:12 pm 
Parts Gopher
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ah ok thanks for all help guys, i just wasnt sure about how to achieve the sound, i think it is the kind of v8 sound u hear, i only heard 1 car in town with it and its a holden ute but its only a 6 so i mite try catch him 1 day and ask him.
tx for all help
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 Post subject: Re: exaust sound question
Posted: Tue May 04, 2010 7:19 pm 
Parts Gopher
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this was the kind of sound i was meaning the crackle and popping http://www.youtube.com/watch?v=1jC26HM8My0 =( y cant use p platers have 8s lol
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