Invidia Downpipe Catted Divorced Wastegate

Part #: INV HS08SW1DPC
( 70 reviews )

$540.40 $486.36 Sale Price!

MSRP: $772.00


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Brand: Invidia
Includes Catalytic Converter: Yes
Installation Hardware Included: Yes
Mouth Design: Divorced Wastegate
Piping Coating: No
Piping Flex Joint: No
Piping ID: 3.00in
Piping Material: 304 Stainless Steel
Piping Taper: No
Catalytic Converter Cell Count: 200
Mfgr. Warranty: 1 Year
Return Policy:

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Subaru Impreza
WRX STI Hatchback 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX STI Special Edition Hatchback 2010WRX STI Limited Sedan 2011, 2012, 2013, 2014WRX STI Limited Hatchback 2011, 2012, 2013, 2014WRX STI Sedan 2011, 2012, 2013, 2014WRX Sedan 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX Hatchback 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX Premium Sedan 2010, 2011, 2012, 2013, 2014WRX Premium Hatchback 2010, 2011, 2012, 2013, 2014WRX Limited Sedan 2010, 2011, 2012, 2013, 2014WRX Limited Hatchback 2010, 2011, 2012, 2013, 20142.5 GT Sedan 2009, 20102.5 GT Hatchback 2009, 2010
Subaru Legacy
GT Limited 2005, 2007, 2008, 2009GT 2005, 2006GT spec.B 2006, 2007, 2008, 2009
Subaru Forester
XT 2009XT Limited 2009, 2010XT Premium 2010, 2011, 2012, 2013XT Touring 2011, 2012, 2013
Subaru Outback
XT 2005, 2006XT Limited 2005, 2007, 2008, 2009
Subaru WRX STI
Base 2015

The Invidia Catted Downpipe features a Divorced Wastegate and cat, this will seperate the exhaust gas exiting the downpipe, creating a smoother exhaust flow, thus resulting in more HP and Torque. All this while keeping the exhaust fumes clean and safe for the enviroment.

The downpipe is constucted of 304 stainless steel 3" mandrel bent tubing and bolts up to any stock replacement catback or stock unit. New Downpipe Gasket recommended for purchase with this downpipe.

REVIEWS ( 70 )



Great downpipe!
jdurrett 7 months ago
Invidia doesnt really need much of a review their products speak for themselves. I paired this with the Invidia Q300 and it did make the exhaust note slightly louder...more throaty i think. My main reason for writing this review is that I can CONFIRM fitment of this downpipe with an EWG. I had worries that the EWG wouldn't fit properly due to the placement of the cat, but everything fit fine! It's a super tight fit for sure, but nothing is touching or rubbing anywhere!

SlooowWRX 8 months ago
All I can say is WOW, what a huge difference in power this downpipe makes. I have a Cobb SF Intake, Cobb AP3, Invidia N1 Dual Catback and now the Invidia Catted Downpipe. I HIGHLY recommend you get a Protune when you go Stage 2. My tuner did a dyno run on Cobb's OTS stage 2 tune, my car made 245hp/255lbft. After his adjustments for a conservative tune, it's putting out 297hp/300lbft at 18.5psi max boost! The car pulls significantly stronger and the downpipe and N1 dual combo sounds MEAN.
Verified Purchase
Stage 2+ Great results
apetrillo8783345 9 months ago
I bought this down pipe when RSD had a 10% off invidia deal. I performed the install myself in my garage with the car on jack stands. The car is a 2011 and had 35k miles on it. With a bunch of pre soaking with WD40 and some patience the install was done in about 5 hours. It requires the removal of the intercooler which you will get used to if you work on your sti yourself. The downpipe was BEAUTIFUL out of the box. The wields were flawless and the finish on the pipe itself was very nice minus a few scratches. The flange sat perfectly flat against the turbine and has no leaks. It has been a year since and the down pipe is now burnt/brown in color but this is expected as i had gotten allot of WD 40 on it during the install. Still no warping/leaks or rust. Great product.

2011 STi
COsti2243 11 months ago
Great product amazing sound. Easy install provided I have access to a lift at work.

shanerbra 1 year ago
this donwpipe is awesome the sound of it with the n1 race is crazy.


  • AnswerQ: invidia N1 cat back   2011sti_guy 19 days ago

    I have the invidia n1 cat back on my 2011 sti sedan if I buy this downpipe do I also need to purchase a mid pipe to complete the exhaust

    • A: The mid-pipe is located on your catback exhaust already, this will complete your turbo back exhaust setup.

      Trevor C. 19 days ago

  • AnswerQ: do I need adapater   21 days ago

    I have a nameless catback, will this fit or do I need an adapater?

    • A: If the catback is a 3" connection at the flange, this will bolt right up and no adapter would be needed. If the catback is 2.5" at the flange, then you would need GRM 077044.

      Brady R 20 days ago

  • AnswerQ: Downpipe w/ intake   2 months ago

    Do i need to upgrade my fuel pump/injectors to run this downpipe with my cobb intake

    • A: For stage 2 or customer mapping, Fuel upgrades will not be required to run a downpipe. You will want the proper tuning for your setup.

      Evan M. 2 months ago

  • AnswerQ: COBB OTS STAGE 2 MAP + Invidia Turboback  Shah21837 3 months ago

    I have a stock 13' WRX with an Invidia Q300 catback exhaust. Since I already have an Invidia catback exhaust, I want an Invidia downpipe but I am afraid the divorced wastegate on this Invidia downpipe (compared to the bellmouth COBB downpipe) might not be compatible with the COBB AP OTS Stage 2 tune. I am looking for RELIABILITY, not necessarily maximum power. Can I safely run the AP OTS Stage 2 map with this downpipe?

    • A: The divorced wastegate design will have little to no effect with the Cobb OTS tunes. You should not experience any issues with this downpipe on the OTS tunes.

      Josh P. 3 months ago

  • AnswerQ: Stage 2  spynldoc31719 3 months ago

    Can i use the cobb accessport to do a stage 2 tune after installing the downpipe with stock exhaust? Will this cause any problems using stock exhaust? I already did the stage 1 tune with the cobb CAI

    • A: It is recommended to use an aftermarket 3 inch Catback with the stage 2 AP tune. However you shouldn't see any problems with the factory Catback.

      Connor M. 3 months ago