I tend to lean toward the JRSC for a couple reasons. First off, the blower blows straight into the intake ports, whereas the Vortech must travel up the intake pipe, through the throttle body, through the intake manifold, then into the intake ports. Next, the Vortech is driven by bar spanning the engine bay. This translates into extra parasitic drag both at the flywheel and at the turbine.
The Vortech clamis to make more power. This is true out of the box. The Vortech benefits from more boost and the aftercooler. However, both of these are easily remedied. Stepper pulley kits are readily available for the JRSC, as well as an air to water intercooler.
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