Off To The Cell
Our test vehicle was also outfitted with the typical bolt-ons-a Comptech 4-2-1 header, APEXi N1 exhaust and K&N intake. Boost checked in at 10 psi.

A stock Si from previous testing laid down 142 hp and 102 lb-ft of torque; what would the Vortech-boosted Si pump out? The testing produced one of the more aggressive power curves we have seen. The V5 was not shy about pumping out the boost as only the 7900 rpm rev-limit stopped the party. At the 7900 rpm cut-off, the blower provided its biggest increase, a whopping 132.6 hp and 88 lb-ft of torque. What floored us was the steepness of the curve and how the B16 unleashed the power and torque after the VTEC cam lobes were put into effect.

About the only critical aspect of the Vortech blower package is the installation, which includes a driveshaft to connect the blower to the drive pulley. This may be complicated contrasted to an Eaton kit, which can have the manifold and blower cast in one piece. But remember: You only have to install it once and there are 272 raging ponies waiting at the end of the rainbow.

Power Technik

1999 Honda Civic Si<


1.6 liters

Forced Induction:
Vortech V5 supercharger

Liquid-to-air Vortech Power cooler

Nitrous Oxide:

Fuel System:
Upgraded in-line pump, ortech FMU, Vortech rail, stock injectors

Ignition System:
Stock w/Crane coil

Air Intake:
Stock Manifold

Comptech header, APEXi N1 cat-back exhaust

Boost Control:
Pulley, 10 ps