ScienceofSpeed releases supercharger system
04-20-2009 | 03:31 PM
#521
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Former Sponsor
Joined: Jan 2002
Posts: 2,864
Likes: 6
From: Phoenix
Originally Posted by 518135,Apr 20 2009, 12:32 PM
Thanks Chris. I was a little frustrated on Friday but all is good now. Thanks again.
cheers,
-- Chris
04-21-2009 | 01:53 PM
#522
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Joined: Oct 2008
Posts: 343
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im an idiot i finaly see... hey chris if u check this before i can call my after cooler in the mail? i missed a package from fedex today and not sure if thats my ecu or the after cool ... also wasnt my order suposed to include 02 extensions? for the kpro and what not? i thought thats what you said ok sorry to bother thank you
04-22-2009 | 01:26 PM
#524
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Joined: Oct 2008
Posts: 343
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Originally Posted by pinstriped06,Apr 21 2009, 01:53 PM
im an idiot i finaly see... hey chris if u check this before i can call my after cooler in the mail? i missed a package from fedex today and not sure if thats my ecu or the after cool ... also wasnt my order suposed to include 02 extensions? for the kpro and what not? i thought thats what you said ok sorry to bother thank you
04-23-2009 | 06:02 AM
#525
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Joined: Feb 2008
Posts: 1,911
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From: LaVista, NE
OK some questions.
I want to get the stage 2 with the k-pro. so the k pro isnt tuned and i need to take it to a tuner??
also for the install did you guys lift the car up??
as far as tools, anything special required other than a breaker bar or a torque wrench? Thanks!
I want to get the stage 2 with the k-pro. so the k pro isnt tuned and i need to take it to a tuner??
also for the install did you guys lift the car up??
as far as tools, anything special required other than a breaker bar or a torque wrench? Thanks!
04-23-2009 | 01:06 PM
#527
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Joined: Jul 2008
Posts: 187
Likes: 0
From: San Antonio, TX
Originally Posted by MasterForce,Apr 23 2009, 06:02 AM
OK some questions.
I want to get the stage 2 with the k-pro. so the k pro isnt tuned and i need to take it to a tuner??
also for the install did you guys lift the car up??
as far as tools, anything special required other than a breaker bar or a torque wrench? Thanks!
I want to get the stage 2 with the k-pro. so the k pro isnt tuned and i need to take it to a tuner??
also for the install did you guys lift the car up??
as far as tools, anything special required other than a breaker bar or a torque wrench? Thanks!
04-23-2009 | 01:57 PM
#530
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Joined: Sep 2008
Posts: 763
Likes: 0
From: Upper MidWest (Wisconsin)
i quote, courtesy of DaveP
"According to Corky Bell in his excellent book on turbocharging, a 2.5" exhaust diameter is perfect for 400 HP. You don't want larger because the flow velocity through the system drops below the 250 feet per second that he considers ideal. You may actually give up some power (albiet small) by losing velocity which allows the exhaust gas to cool off too much in the pipe. As the gas cools off in the exhaust pipe, it becomes more dense (contracts). If this is allowed to happen in an overly large exhaust pipe, then the flow speed drops even more and you wind up with MORE back pressure than you would have in a properly sized system for the amount of gas moving through your engine.
Remeber from Physics class that Bernoulli's law tells us that when gas flow slows, pressure rises. What we want in a well designed exhaust system is constant or accelerating flow so that pressure is dropping and "vacuuming" the gas down pipe so the engine does not need to push it.
So even though it sounds counter-intuitive, going larger than 2.5" with anything near or less than 400 HP is costing you some power. The AMUSE R1 system like I have is about 2.4" which is ideal for a 350-400 hp Turbo or S/C set up on the S2k.
This is a case of BIGGER is NOT BETTER."
"According to Corky Bell in his excellent book on turbocharging, a 2.5" exhaust diameter is perfect for 400 HP. You don't want larger because the flow velocity through the system drops below the 250 feet per second that he considers ideal. You may actually give up some power (albiet small) by losing velocity which allows the exhaust gas to cool off too much in the pipe. As the gas cools off in the exhaust pipe, it becomes more dense (contracts). If this is allowed to happen in an overly large exhaust pipe, then the flow speed drops even more and you wind up with MORE back pressure than you would have in a properly sized system for the amount of gas moving through your engine.
Remeber from Physics class that Bernoulli's law tells us that when gas flow slows, pressure rises. What we want in a well designed exhaust system is constant or accelerating flow so that pressure is dropping and "vacuuming" the gas down pipe so the engine does not need to push it.
So even though it sounds counter-intuitive, going larger than 2.5" with anything near or less than 400 HP is costing you some power. The AMUSE R1 system like I have is about 2.4" which is ideal for a 350-400 hp Turbo or S/C set up on the S2k.
This is a case of BIGGER is NOT BETTER."