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chatter noise, why is it different on mine?

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Old Jul 27, 2010 | 04:38 PM
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Default chatter noise, why is it different on mine?

hi guys, the chatter off a ford engine sounds classic but on my c20let engine it doesn't sound the same...im running a t34 .63 and it doesnt make the high pitch DA na na na na lol if you get me??

is it to with air filter tube size/filter/no filter etc
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Old Jul 27, 2010 | 05:04 PM
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I find a lot depends on boost levels and how quickly (or slowly) you shut the throttle

Many believe the trumpet shape/size has a big effect!
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Old Jul 27, 2010 | 05:08 PM
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Take the air filter off and listen to it then lol.. Very differnt then!

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Old Jul 27, 2010 | 06:15 PM
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As said boost level, size of turbo and what filter u run can all make a difference!!!
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Old Jul 27, 2010 | 06:27 PM
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the turbo is at 11psi and its a .63 turbine 0.50 A/R t34...what you boys run?

i ran a green filter averagre size and now a bigger filter....it has2 90deg bends up and over the chassis leg then into a little straight....the pipe is 3".

i have the AFM there as well but considering moving this so i can run it with no filter etc or some kind of mesh over the tubo inlet.

pee vee - your vid doesn't work

Last edited by dearing5; Jul 27, 2010 at 06:29 PM.
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Old Jul 28, 2010 | 10:36 AM
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?
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Old Jul 28, 2010 | 11:08 AM
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I was running 2bar boost on a T34 but on a Cossie engine
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Old Jul 28, 2010 | 03:09 PM
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would my afm make it sound different? maybe i could put it the other side of the turbo...i have seen this before.
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Old Jul 28, 2010 | 04:36 PM
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I would not put it the other side of the turbo I've never seen this

Compressor inlet side, it would possibly see from around -10kPa to 10kPa, compressor out it would see anything upto 250kPa (2.5bar) depending on what boost you're running. Also they are very sensitive things and MAF linearisation etc is not to be messed with!
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Old Jul 28, 2010 | 05:21 PM
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this is what i thought! a guy on another forum put his on the pressure side...and he said its faultless but i disagree. the wires are very thin that read the air so yeah surely 25psi would wreck it?

i'll try taking the filter off or more boost haha.

mine sounds the same as this

http://www.youtube.com/watch?v=cPZZvd55hxg

and this is what i want??

http://www.youtube.com/watch?v=6J-mS...eature=related

Last edited by dearing5; Jul 28, 2010 at 05:26 PM.
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Old Jul 29, 2010 | 08:27 AM
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Any difference in the inlet is going to affect if from one car to another noise wise I would have thought.
tabetha
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Old Jul 29, 2010 | 08:45 AM
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^In those videos i think the fiesta sound great.

Seen the video of that escort before and I hate that sound. Really high pitched, it just sounds pathetic.
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Old Jul 29, 2010 | 09:10 AM
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yeah i guess so....why are they different though?
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Old Jul 29, 2010 | 09:17 AM
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http://www.youtube.com/watch?v=zRPE3tDhlO4
http://www.youtube.com/watch?v=dIRUYvHBGLY
http://www.youtube.com/watch?v=LNawymsX3xA
http://www.youtube.com/watch?v=ULJJhDwhy2k

Gr.a cosworth, 2.0bar+ with 34mm restrictor on a turbonetics turbo
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