We just got another shipment of Helix catbacks and Gruppe-S headers.
Helix Catback - 02+ WRX

$499 shipped !

Piping Style: AVG 80mm Stainless Mandrel Bent, Polished
Tip Type: 120mm Straight Cut
Resonator: One
Silencer: Yes (included)

Gruppe-S V2 Manifold - 02+ WRX / 04+ STI

$399 shipped !

The Gruppe-S manifold is a 4 to 1 manifold designed to provide extensive midrange and top-end power gains. Our manifold features T304 Stainless Steel piping, mandrel bends, and CNC precision cut flanges. The 4-1 collector is cast to ensure the smoothest possible low rates. Strong gains in both HP and torque can be expected with the addition of the manifold, especially with high horsepower applications. Includes all necessary gaskets.


Thanks
Preston

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Hi Preston,

do you guys have any stock vs headers installed dyno comparison sheets? Will my car be any noisier after the install?

Thanks!

 

Helix High-Flow Catted Downpipe (200 cell) 02+ WRX / STI
$399 shipped

 

Here is an older dyno chart.

Dyno graphs shows testing with 04 WRX catted downpipe, uppipe, exhaust, versus addition of manifold only.

Cheers
Preston

 

Does the Helix catted downpipe have a heat shield that covers the cat? I'm probably weird for thinking this, but I might be concerned that someone may think the cat looks like a resonator.

 

No, there is no heat shield that covers the cat.

Cheers
Preston