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SportTrac Discussion
Engine & Drivetrain
STS Remote Mount Turbo Systems
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<blockquote data-quote="Richard L" data-source="post: 897377" data-attributes="member: 52972"><p>Gavin,</p><p></p><p>In the STS turbo, when you shut the throttle, the pressure only drops the excess boost pressure, so there is still some resistance, and the turbo will continue to try to compress the air based on the engines RPM and the volume of exhaust gas still flowing through the turbines. Of course if the throttle ramains closed long enough the turbo will slow down considerably and all boost pressure will be lost. </p><p></p><p></p><p></p><p>The real difference with the STS turbo is that all the available exhaust gas for any given engine RPM is always flowing into the turbo and spinning it much faster than if the exhaust gas was routed around the turbo. That's what causes turbo-lag and is the biggest gripe everyone has always had about turbocharged engines. No midrange throttle response is terrible on a street driven vehcile because that's what you need for passing acceleration. STS turbos put that quick throttle response back into turbocharged vehicles.</p><p></p><p></p><p></p><p>...Rich</p></blockquote><p></p>
[QUOTE="Richard L, post: 897377, member: 52972"] Gavin, In the STS turbo, when you shut the throttle, the pressure only drops the excess boost pressure, so there is still some resistance, and the turbo will continue to try to compress the air based on the engines RPM and the volume of exhaust gas still flowing through the turbines. Of course if the throttle ramains closed long enough the turbo will slow down considerably and all boost pressure will be lost. The real difference with the STS turbo is that all the available exhaust gas for any given engine RPM is always flowing into the turbo and spinning it much faster than if the exhaust gas was routed around the turbo. That's what causes turbo-lag and is the biggest gripe everyone has always had about turbocharged engines. No midrange throttle response is terrible on a street driven vehcile because that's what you need for passing acceleration. STS turbos put that quick throttle response back into turbocharged vehicles. ...Rich [/QUOTE]
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SportTrac Discussion
Engine & Drivetrain
STS Remote Mount Turbo Systems
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