Supercharged/Turbocharged The increase in air/fuel pressure above atmospheric pressure in the intake system caused by the action of a supercharger or turbocharger attached to an engine.
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General Supercharger Question

Old 02-12-2008, 12:35 PM
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General Supercharger Question

I have a v1 supercharger on my 99gxe and was wondering where i should see full boost by? Should it come right in or is it the same as my turbo car? I am just wondering . I am new to the supercharger thing.
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Old 02-12-2008, 02:17 PM
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Since Vortechs are centrifugal, boost is directly related to RPM; so, you'll make full boost at red line.
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Old 02-12-2008, 02:29 PM
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Originally Posted by tsaulz View Post
Since Vortechs are centrifugal, boost is directly related to RPM; so, you'll make full boost at red line.
I was wondering. I played with it today and couldnt get more than 10psi but i guess i just need to give it more time lol.
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Old 02-12-2008, 02:32 PM
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What sized pulley are you running?
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Old 02-12-2008, 02:37 PM
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2.87 as of right now.
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Old 02-12-2008, 02:40 PM
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With the 2.87, you should be pushing 13 PSI--what kind of fuel setup are you running? What is your intake setup? I've been told that the K&N that comes with the Stillen kit doesn't flow enough to make full boost on a 2.87 in pulley.
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Old 02-12-2008, 02:44 PM
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370 injectors.255walbro stillen charge pipe and aftermarket filter. safcII for tuneing. Also where should i see 13? i hit 10 at 5k but i let out since we have a lot of snow here and i have low pro tires on it.
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Old 02-12-2008, 02:54 PM
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Originally Posted by tsaulz View Post
Since Vortechs are centrifugal, boost is directly related to RPM; so, you'll make full boost at red line.
Originally Posted by kzoosho View Post
370 injectors.255walbro stillen charge pipe and aftermarket filter. safcII for tuneing. Also where should i see 13? i hit 10 at 5k but i let out since we have a lot of snow here and i have low pro tires on it.
You should make 13 PSI at ~6550 RPMs. Since you're making [email protected], it seems like you're in good shape.
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Old 02-12-2008, 02:58 PM
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Ok cool. Just checking. I just got the car and i had to fix a bunch of lines hoses and what not. Like for one he was boosting the crank case so i redid that . Then there were 9 tees that led to 3 items ,im down to 4 tees to the same ones. i also put the z32 maf in today so i have to retune soon as i hit the dyno
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Old 02-14-2008, 07:25 PM
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You'll see max boost at redline but only at the top of first gear, maybe second. You'll never see full boost at the top of third, even if you do take it redline.
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Old 02-15-2008, 02:23 AM
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Originally Posted by ptatohed View Post
You'll see max boost at redline but only at the top of first gear, maybe second. You'll never see full boost at the top of third, even if you do take it redline.
Are you talking auto ,5sp or does it matter? Like i said this is the first S/C car i have ever had so i have no idea what to look at.
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Old 02-15-2008, 04:03 AM
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congrats on the SC'ed car bro......like everyone said...full boost @ redline I have a 9lb pulley and wouldn't see 9 until im up there.....
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Old 02-15-2008, 09:25 AM
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Originally Posted by kzoosho View Post
Are you talking auto ,5sp or does it matter? Like i said this is the first S/C car i have ever had so i have no idea what to look at.
It doesn't matter. Same thing happens with my 5 spd IIRC.
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Old 02-15-2008, 11:58 PM
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Originally Posted by The Wizard View Post
It doesn't matter. Same thing happens with my 5 spd IIRC.
That kinda blows. O well the s/c was practically free since the car was only 2200 bucks. So i guess i can live with it.
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Old 02-16-2008, 12:35 AM
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Originally Posted by kzoosho View Post
Are you talking auto ,5sp or does it matter? Like i said this is the first S/C car i have ever had so i have no idea what to look at.
I'm speaking of what you have and what I have.
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Old 02-16-2008, 02:14 AM
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Originally Posted by ptatohed View Post
I'm speaking of what you have and what I have.
Ok ill take it for what it is.
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