Helix Power has just released their high-flow metal substrate catalytic converter downpipe for the Subaru Impreza WRX/STI. We air-freighted in 10pcs for those that are interested. Supply is VERY limited. If this is what you are looking for, please order yours today :)

This particular downpipe incorporates Helix Power’s first-rate bell-mouth downpipe, with the addition of a 200 cell Metal-Substrate high-flow catalytic converter and thermal barrier heat-shield. The 200 cell Metal-Substrate downpipe has been tested by us to yield 7-10whp over the factory twin cats, while able to pass stringent California smog standards. The thermal barrier heat-shield assists in rapid warm-up of the cat for maximum efficiency and helping to reduce engine bay temperatures.

Introductory Price:
$399 Shipped!!!

http://www.gruppe-s.com/stuff/HelixWRXDPCatted.jpg http://www.gruppe-s.com/stuff/200CellFlowTestSmall.jpg http://www.gruppe-s.com/stuff/SmogWRXSmallb.jpg

Please contact us with any questions. Thanks!

Gary
www.gruppe-s.com
gary@gruppe-s.com
510-498-8400
510-498-8882 fax

Sweet, was this with a stock top mount?

will this mate to any catback?

Originally posted by mnkypsycho
will this mate to any catback?

Yes sir

What will the normal price be?

Must...work...more...got...to...get...this.

:devil:

Originally posted by Jasvboost
Must...work...more...got...to...get...this.

:devil:

will this match up w/a borla hush??

I would like to know this too.

Any chance of ceramic coating on these?

Have you guys recieve any more downpipes? If not how long until mine comes in? Also I will be placing an order for VF34, injectors and pump either Tues. or Wed.


Thanks

J Geezy

bump for question about matching up w/ Borla Hush.. anybody?

whats the word on these

Hehe, the word is "search", specifically in the parts review forum :)

Here's a start: http://forums.nasioc.com/forums/search.php?searchid=5277147