2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

SC Silencer holes

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Old 11-03-2008, 07:47 PM
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well, ive done it (sorry bill) lol.. i did it when i took my blower off to paint it black.. the main thing i noticed is the whine is definatley louder and now you can start hearing it in low rpm's.. hopefully the quiksteel wont ever come loose and if it ever does, hopefully it only ***** up the blower lol..
Old 11-03-2008, 07:51 PM
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It does boost quicker... not higher psi, but it does boost faster.
Old 11-03-2008, 07:54 PM
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has anyone heard of anything negitive happening to someones car from this?
Old 11-03-2008, 08:03 PM
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Originally Posted by theneelster
So if air passes through the silencer holes would restricting the flow path to the center triangle increase or decrease boost response? It could be neither depending on how much air goes through those holes but there's no way it's going to boost "faster" through restriction.

Correct, this makes the supercharger louder by forcing the air through a smaller opening, the silencer holes allow air to be pushed out more easily. it also has no impact on how quickly boost builds.
Old 11-04-2008, 02:52 AM
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Originally Posted by -Jayson-
Correct, this makes the supercharger louder by forcing the air through a smaller opening, the silencer holes allow air to be pushed out more easily. it also has no impact on how quickly boost builds.
port the main opening and plug the silencer holes. there will still be a noticeable increase in whine. ithas more to do with the location of the holes. i cant remember exactly what it was, but someone on here (maybe area47 or witt) described it probably over a year ago
Old 11-04-2008, 12:50 PM
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Originally Posted by theneelster



Conceivably if they fall apart or come off they could take out a piston or two if the suction is enough to pull them up through the runners.


It would have to get by the laminova cores first , but to each their own.

Originally Posted by VeNoM0713
well, ive done it (sorry bill) lol.. i did it when i took my blower off to paint it black.. the main thing i noticed is the whine is definatley louder and now you can start hearing it in low rpm's.. hopefully the quiksteel wont ever come loose and if it ever does, hopefully it only ***** up the blower lol..
Haha , i want to hear it sometime. I wouldn't worry to much the cores in the intake manifold should catch them . It will be some work to get it out IF ....IF it ever comes loose. Have fun with the car , the next few days are gonna be it for awhile (weather wise) .

Last edited by rukkee; 11-04-2008 at 12:50 PM. Reason: Automerged Doublepost
Old 11-04-2008, 01:32 PM
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well i can deffinately hear the difference now. i think i was just too tired to hear the difference but its nice and yes it boosts way faster than stock did. maybe i can get a video sometime... (whenever i get a video camera to use)
Old 11-04-2008, 02:56 PM
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i dun uderstand what u guys mean by saying it boosts faster..... i hit peak boost the second i floor it. occasionally, ill be 1psi short of peak boost...but still....its not a turbo
Old 11-04-2008, 08:34 PM
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no way you hit boost the second you floor it...
Old 11-04-2008, 09:05 PM
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Originally Posted by AnthonyCM
has anyone heard of anything negitive happening to someones car from this?
Take this for what you will.

My JBWeld fell out. How soon after it was done I don't know.

My motor did eventually blow, but that was something by itself completely unrelated.

Would I do it again if I could weld, yes.

The whine was definitely without a doubt louder.
Old 11-04-2008, 09:11 PM
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Originally Posted by chris88z24
It does boost quicker... not higher psi, but it does boost faster.
umm.. no
Old 11-04-2008, 09:17 PM
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It does not boost faster.
Old 11-04-2008, 11:49 PM
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Does this make the IAT-2s higher? Can this be welded or will it warp the blower?
Old 11-05-2008, 12:10 AM
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do not weld, do not use jbweld
Old 11-05-2008, 02:29 AM
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Originally Posted by flash13brandon
no way you hit boost the second you floor it...
yes sir...i hit full boost before my tires get traction. if i floor it at any RPM im within 1psi of full boost. i thought this was the case for all of u...?
Old 11-05-2008, 02:35 AM
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no way. boost is limited in 1st gear anyway but there isnt full boost the second you floor it in second either
Old 11-05-2008, 04:41 AM
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Originally Posted by EmperorJJ1
no way. boost is limited in 1st gear anyway but there isnt full boost the second you floor it in second either
i dont have any boost limited in any gear....wrong ECM for that one. but uhh...yea, i boost 10psi instantly, and i only peak at 11psi (larger displacement=less psi for the same CFM). A lot of the times, i boost 10.5psi and it creeps to 11psi, and a lot of the times, i boost to 11psi instantly and it holds there. Hell, i can film it for you guys if you dont believe me....i have no reason to lie about it, but i make full boost instantly

maybe u guys have tq management turned on..?

Last edited by HunterKiller89; 11-05-2008 at 04:58 AM.
Old 11-05-2008, 07:58 AM
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No. Fact is the stock gauge sucks dick

Mechanical gauges show exactly what you're saying
Old 11-05-2008, 09:44 AM
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sorry I did not realize that you dont drive an LSJ. it might be different...im not sure. cause I dont hit full boost immediately.
Old 11-06-2008, 09:31 AM
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i dont get anywhere near full boost when i hit it but it does get higher boost than before the silencer holes where pluged. mine is something like this. (instead of 5 psi when hit gas at 2k, will hit 7-8 psi when hit gas at 2k) its not that big of a difference and there is no power gain whatsoever. its just louder.
Old 11-06-2008, 09:39 AM
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https://www.cobaltss.net/forums/2-0l-lsj-performance-tech-47/why-pcv-valves-suck-pics-my-s-c-102549/

Don't use JB Weld. It WILL fall apart.

Quicksteel is the ONLY product that I recommend using. Mine have been in for over $10k miles and they look the same as the day I put them in.
Old 11-06-2008, 09:56 AM
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Get a mechanical boost gauge. Then you'll see how fast your car REALLY boosts up.
Old 11-06-2008, 01:46 PM
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Originally Posted by rockSTAR_SS
Get a mechanical boost gauge. Then you'll see how fast your car REALLY boosts up.
so our stock boost gauges are ****??? why would auto meter do that?
Old 11-06-2008, 01:57 PM
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Originally Posted by EmperorJJ1
no way. boost is limited in 1st gear anyway but there isnt full boost the second you floor it in second either
Boost isnt limited unless u limit it using hp tuners...

and everytime i floor it in second... in less than a second i am 3-4 psi from full boost, after a second, full boost...
Old 11-06-2008, 02:09 PM
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Originally Posted by MBMCustoms
so our stock boost gauges are ****??? why would auto meter do that?
Compared to an autometer mechanical boost gauge...yes.

They work just fine if you don't see the need for an aftermarket boost gauge.


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