Chatter noise everyone says is wastegate
17 August 2009, 12:11 PM
#1
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Chatter noise everyone says is wastegate
Guys, how do i get my car to make the noise that all the chavs call wastegate chatter?
I know it wont make me any faster but i like it so no lectures please!
Thanks.
Oh. its MY05 WRX turbo back de-cat and panel filter plus mapped!
I know it wont make me any faster but i like it so no lectures please!
Thanks.
Oh. its MY05 WRX turbo back de-cat and panel filter plus mapped!
17 August 2009, 01:10 PM
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Yeah i know thats one way of doing it but im not gonna do that. also i know its not wastegate chatter but you here it on certain cars that are tuned properly so i thought there must be a way of getting it thats not bad for engine.
One guy said to fit a front mount intercooler but i dont see how that would help??
One guy said to fit a front mount intercooler but i dont see how that would help??
17 August 2009, 01:30 PM
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lol what a load of twoddle (my new word for today)
Right to get the "noise" you are really only two ways to do it...
1. New turbo with an external wastegate (cost quite a bit)
2. Fit an induction kit and block off the DV (or have a standard recirc DV) but you have to be running a bit of BHP to get the noise your after
Its perfectly fine for the tubo, it wont damage your turbo (despite common belief) UNLESS youre running more than 30psi or a bigger turbo than the equivalant garret T4.
It WILL however KILL your Maf sensor after a period of time and that will inturn probably kill your engine
Right to get the "noise" you are really only two ways to do it...
1. New turbo with an external wastegate (cost quite a bit)
2. Fit an induction kit and block off the DV (or have a standard recirc DV) but you have to be running a bit of BHP to get the noise your after
Its perfectly fine for the tubo, it wont damage your turbo (despite common belief) UNLESS youre running more than 30psi or a bigger turbo than the equivalant garret T4.
It WILL however KILL your Maf sensor after a period of time and that will inturn probably kill your engine
17 August 2009, 01:57 PM
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lol what a load of twoddle (my new word for today)
Right to get the "noise" you are really only two ways to do it...
1. New turbo with an external wastegate (cost quite a bit)
2. Fit an induction kit and block off the DV (or have a standard recirc DV) but you have to be running a bit of BHP to get the noise your after
Its perfectly fine for the tubo, it wont damage your turbo (despite common belief) UNLESS youre running more than 30psi or a bigger turbo than the equivalant garret T4.
It WILL however KILL your Maf sensor after a period of time and that will inturn probably kill your engine
Right to get the "noise" you are really only two ways to do it...
1. New turbo with an external wastegate (cost quite a bit)
2. Fit an induction kit and block off the DV (or have a standard recirc DV) but you have to be running a bit of BHP to get the noise your after
Its perfectly fine for the tubo, it wont damage your turbo (despite common belief) UNLESS youre running more than 30psi or a bigger turbo than the equivalant garret T4.
It WILL however KILL your Maf sensor after a period of time and that will inturn probably kill your engine
Spending an extra £1k on a Simtek to go mafless might save the engine then?
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17 August 2009, 02:50 PM
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This is what I've heard before that the noise my friend is the sound of stalling air, as it parts company from the leading edge of the compressor blades in the turbo...also called pigeon...also known as wastegate chatter. For extra pigeon turn the boost up, bin the dump valve and fit an induction kit.
Please note; doing all of the above just for noise is not advisable as it could quite easily blow your motor and destroy your turbo!.
Please note; doing all of the above just for noise is not advisable as it could quite easily blow your motor and destroy your turbo!.
17 August 2009, 02:55 PM
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Like i said... not unless your running some super duper turbo at over 500bhp you wont... think you have more chance of fecking up the maf, making the engine over/under fuel and the engine go boom before the turbo brakes... but then again, if the engine goes boom, bits could fly out the exhaust braking the turbo on the way out. 
17 August 2009, 03:03 PM
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Like i said... not unless your running some super duper turbo at over 500bhp you wont... think you have more chance of fecking up the maf, making the engine over/under fuel and the engine go boom before the turbo brakes... but then again, if the engine goes boom, bits could fly out the exhaust braking the turbo on the way out.
so much confusing info outthere on this subject either way like you said it will definately start to do more harm than good...is it worth it for some noise?? even if it does make you feel like a WRC driver
17 August 2009, 03:29 PM
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on inspection if you have a look at the turbo set up the noise will come from the turbo staling but again the waste gate opens and closes due to this motion and thus causing wastegate chatter. the valve opens and close fast with the turbo also stalling.
i have read up that it doesnt break the turbo however i will agree that it may **** the maf up as i have noticed that i get oil go the wrong way through the maf and gets blown out of the filter rather than going through the turbo. (oil vapor). this is fixed by the catch tank fitment.
and also it will ruin the acurator as the opening and closing will eventually ruin the diapham (spelling)
i have read up that it doesnt break the turbo however i will agree that it may **** the maf up as i have noticed that i get oil go the wrong way through the maf and gets blown out of the filter rather than going through the turbo. (oil vapor). this is fixed by the catch tank fitment.
and also it will ruin the acurator as the opening and closing will eventually ruin the diapham (spelling)
17 August 2009, 03:32 PM
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also i have noticed that you do get quicker response from not having a dv. i think this is due to no or little pressure loss in the intake system.
think about it. with a dv things become more laggy especially if running fmic.
a recirc will allow air back into the intake at a differnt part of the system causing less pressure.
with no dv or recir the air stays where it is and this causes better response.
think about it. with a dv things become more laggy especially if running fmic.
a recirc will allow air back into the intake at a differnt part of the system causing less pressure.
with no dv or recir the air stays where it is and this causes better response.
17 August 2009, 05:36 PM
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See if one of the mods will sticky it - covers most of this, with a bonus extra a little further down.
17 August 2009, 07:18 PM
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There's no such thing as a specific boost level that is "safe" or "unsafe" as far as this goes.
17 August 2009, 07:20 PM
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Mine was much noisier once I got a K&N and a silicon intake pipe on the car, I had to fit an MD series turbo anyway..... 
so the noise is a bonus.....
Also sounds ace with a Forge VTA DV fitted with their stiffest spring, some wouldn't like it, but I drive like grandad round town so not an issue for me.
dunx
so the noise is a bonus.....
Also sounds ace with a Forge VTA DV fitted with their stiffest spring, some wouldn't like it, but I drive like grandad round town so not an issue for me.
dunx
17 August 2009, 07:24 PM
#21
i know the td05 is quite resistant as thats what im running with no resic or dv 
got rid of the resonator in the wing but want it louder and dont want to fit a induction kit, will a pannel filter make any diffrense at all??
got rid of the resonator in the wing but want it louder and dont want to fit a induction kit, will a pannel filter make any diffrense at all??
18 August 2009, 09:17 AM
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That's correct but kinda wrong at the same time. Compressor stall does reduce the life expectancy of the turbo, but it doesn't suddenly start to become damaging over some notional given pressure. It becomes more of an issue as boost levels get higher and higher - while some turbos are more resistant to it than others.
There's no such thing as a specific boost level that is "safe" or "unsafe" as far as this goes.
There's no such thing as a specific boost level that is "safe" or "unsafe" as far as this goes.
im running the vf35 with no turbo issue. touch wood. my acurator started leaking though.
18 August 2009, 10:26 AM
#23
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How do you take resonator out of wing and why? is it a wing off job or is there an easier way andonce removed do you have to plug up the hole in theairbox?
Just so where clear i will not be doing anything to get this "pigeon" noise just wondered if it was possible as it does sound cool!
Just so where clear i will not be doing anything to get this "pigeon" noise just wondered if it was possible as it does sound cool!
18 August 2009, 12:21 PM
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Taking the wing off is fairly simple, open the bonnet, there are 4? bolts there, one under the car (just infront of the door) and two behind the door, and one connecting it to the bumber... its a 2 min job
18 August 2009, 04:32 PM
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How do you take resonator out of wing and why? is it a wing off job or is there an easier way andonce removed do you have to plug up the hole in theairbox?
Just so where clear i will not be doing anything to get this "pigeon" noise just wondered if it was possible as it does sound cool!
Just so where clear i will not be doing anything to get this "pigeon" noise just wondered if it was possible as it does sound cool!
(I'll get my coat)The resonater will come out without taking the wing off. I took mine out to fit my fmic with just the bumper off.
18 August 2009, 04:47 PM
#29
i didnt take anything off 1/2 took off the plastic in the wheel arch and the gaurds under the engine bay and sorted its fiddly dont get me wrong took me 15mins i had never done one before
18 August 2009, 04:52 PM
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My 2 pence. If you run the car with no DV atmos or re-circ, when the throttle snaps shut the positive pressure still in the pipework has no where to go other than back through the compressor. This is what makes the noise. It has nothing to do with the wastegate whatsoever. Internal wastegates are operated by an actuator which is just a spring and a diaphram which works on pressure differences. When the pressure in the actuator pipework becomes high enough, it overcomes the spring and opens the wastegate allowing exhaust gases to bypass the turbo to control the turbo's speed. For the wastegate to be opening and closing like that the pressure in the inlet manifold would also have to be fluctuating rapidly and by large amounts, which it doesn't do when the turbo stalls. The pressure just decreases as compressor speed decreases. A DV stops the compressed air going back through the compressor. The standard airbox and filter acts like a silencer. So if you want the noise, just block off the DV and fit a cone filter. The pulses of air coming back through though may cause damage to the maf and dodgy readings. As for damage to the turbo I don't think it does until you are running high boost on bigger turbos.