Harman Motive 2008 STI Catback and Downpipe - Info, Pics, and Video!! - Page 5

blackhawk444 · 05-08-2008, 05:46 AM

Yeah, I am currently waiting for some better videos before I purchase it.

shiftonthefly · 05-08-2008, 07:12 AM

Me too. Really looking fwd to the high quality vids.

Spork · 05-11-2008, 04:58 AM

Any dyno plots around that show the difference of this system with just the Harman downpipe vs. the entire TBE?

1day · 05-11-2008, 06:15 AM

Quote:

Originally Posted by Spork

Any dyno plots around that show the difference of this system with just the Harman downpipe vs. the entire TBE?

FWIW, I talked to the guys at HM about this. I was told that their DP would not match up to the stock CB perfectly since it was 3". That there may be some leaks. Kinda sucks doing it by the piece-by-piece method, but at least they were honest.

blackhawk444 · 05-11-2008, 11:49 AM

has anyone taken a video yet?

freeman · 05-11-2008, 03:11 PM

Quote:

Originally Posted by 1day

FWIW, I talked to the guys at HM about this. I was told that their DP would not match up to the stock CB perfectly since it was 3". That there may be some leaks. Kinda sucks doing it by the piece-by-piece method, but at least they were honest.

How about HM CBE? Is it going to fit stock DP ?

Spork · 05-11-2008, 03:43 PM

Quote:

Originally Posted by 1day

FWIW, I talked to the guys at HM about this. I was told that their DP would not match up to the stock CB perfectly since it was 3". That there may be some leaks. Kinda sucks doing it by the piece-by-piece method, but at least they were honest.

Thanks, that does help.

I am trying to justify the additional purchase of the cat-back over just a DP. If there is a real improvement on just a Stage 2 setup on the 08 by adding the catback then I'll probably look into purchsing the full setup. I am not interested in it for sound or noise or bling at all. I want to know if there is documented gains to be had on a stage 2 by adding the catback on the 08. If it's just 2-5 hp I can't justify the additional 1k. If it's 10, thats a different story.

paikman · 05-11-2008, 04:01 PM

Spork, there has been quite a large amount gained, dyno proven by tuners..but to utilize it you need to get a protune or custom flash via ecutek software

kts262 · 05-12-2008, 05:21 AM

I see that the bung for the stock rear O2 sensor is pre cat. Any CELs with this? I'm planning to get an 08 STi in the semi-near future and eventually if I mod it I will need it to comply w/ STU auto-x rules which now don't allow for any type of CEL defeat (mechanical, electrical, turning off the CEL in a tune, etc.)

**Harman Motive** · 05-12-2008, 05:13 PM

Here is another video posted by a customer. Thanks to Marcus K for posting it!

YouTube - 2008 STi with Harman Motive Turbo-Back Exhaust

**Harman Motive** · 05-12-2008, 05:16 PM

REGARDING FITMENT OF DOWNPIPE/CATBACK TO OEM:

Our downpipe and catback use a 3" flat flange. The OEM pieces use a 2.5" donut gasket.

In order to keep flow as high as possible, we elected to use the 3" flanges.

If you try and connect a Harman DP to a stock catback, they will bolt together, but the seal is less than optimal due to the thin donut style flange on the stock system. This can result in a small exhaust leak, but won't effect performance.

However, our catback seals nicely to an OEM (or OEM style like Cobb) downpipe. You can use a flat gasket or the donut (the donut fits inside our flange). We recommend using a 3" all the way through design where possible.

Spork · 05-12-2008, 05:17 PM

Are there any left currently in stock, or when is the eta on the next batch?

Thank you.

GilMikalian · 05-12-2008, 05:18 PM

Man, that sounds nice. Maybe a bit too loud for my needs (DD, family hauler) but very nice.

HASTIhatch · 05-13-2008, 04:54 AM

Quote:

Originally Posted by GilMikalian

Man, that sounds nice. Maybe a bit too loud for my needs (DD, family hauler) but very nice.

I ordered one a couple weeks ago and it is on its way to my house as we speak. Not sure if there are any more...

Marcus · 05-13-2008, 06:42 AM

Quote:

Originally Posted by GilMikalian

Man, that sounds nice. Maybe a bit too loud for my needs (DD, family hauler) but very nice.

I'd be surprised if you found this exhaust too loud for DD. If you listen to the radio at all, you will probably not even be able to tell a difference over stock. I'd consider it a very healthy, conservative sound

05-08-2008, 05:46 AM	#61
blackhawk444 Amateur STI Driver Fav Mod: Coming Soon Posts: 26 Join Date: Dec 2007 Trader Rating: (0)	Re: Harman Motive 2008 STI Catback and Downpipe - Info and Pics!! Yeah, I am currently waiting for some better videos before I purchase it. This ad is not endorsed by this member. Please register or login to hide this ad.

05-08-2008, 07:12 AM	#62
shiftonthefly Junior STI Driver Car: 08 DGM STI Fav Mod: right pedal Location: Dallas Posts: 99 Join Date: Dec 2007 Trader Rating: (0)	Re: Harman Motive 2008 STI Catback and Downpipe - Info and Pics!! Me too. Really looking fwd to the high quality vids.

05-11-2008, 04:58 AM	#63
Spork Silver Member Car: AW 08 STi Fav Mod: snow tires Location: Waltham, MA Posts: 161 Join Date: Dec 2007 Trader Rating: (0)	Re: Harman Motive 2008 STI Catback and Downpipe - Info and Pics!! Any dyno plots around that show the difference of this system with just the Harman downpipe vs. the entire TBE?

05-11-2008, 11:49 AM	#65
blackhawk444 Amateur STI Driver Fav Mod: Coming Soon Posts: 26 Join Date: Dec 2007 Trader Rating: (0)	Re: Harman Motive 2008 STI Catback and Downpipe - Info and Pics!! has anyone taken a video yet?

05-11-2008, 04:01 PM	#68
paikman STI Driver Car: 2008 OBP STi base. Fav Mod: COBB AP v2. Location: VA Posts: 269 Join Date: Jan 2008 Trader Rating: (0)	Re: Harman Motive 2008 STI Catback and Downpipe - Info and Pics!! Spork, there has been quite a large amount gained, dyno proven by tuners..but to utilize it you need to get a protune or custom flash via ecutek software

05-12-2008, 05:21 AM	#69
kts262 HowTo Contributor Car: '05 OBP w/ Gold Fav Mod: Spec C Type-RA struts Location: College Park, MD Posts: 2,039 Join Date: Jan 2005 Trader Rating: (7)	Re: Harman Motive 2008 STI Catback and Downpipe - Info and Pics!! I see that the bung for the stock rear O2 sensor is pre cat. Any CELs with this? I'm planning to get an 08 STi in the semi-near future and eventually if I mod it I will need it to comply w/ STU auto-x rules which now don't allow for any type of CEL defeat (mechanical, electrical, turning off the CEL in a tune, etc.)

05-12-2008, 05:13 PM	#70
Harman Motive Authorized Vendor Car: 08 STi Fav Mod: Harman Motive Protune! Location: Torrance, CA Posts: 345 Join Date: Dec 2005 Trader Rating: (3)	Re: Harman Motive 2008 STI Catback and Downpipe - Info and Pics!! Here is another video posted by a customer. Thanks to Marcus K for posting it! YouTube - 2008 STi with Harman Motive Turbo-Back Exhaust

05-12-2008, 05:16 PM	#71
Harman Motive Authorized Vendor Car: 08 STi Fav Mod: Harman Motive Protune! Location: Torrance, CA Posts: 345 Join Date: Dec 2005 Trader Rating: (3)	Re: Harman Motive 2008 STI Catback and Downpipe - Info and Pics!! REGARDING FITMENT OF DOWNPIPE/CATBACK TO OEM: Our downpipe and catback use a 3" flat flange. The OEM pieces use a 2.5" donut gasket. In order to keep flow as high as possible, we elected to use the 3" flanges. If you try and connect a Harman DP to a stock catback, they will bolt together, but the seal is less than optimal due to the thin donut style flange on the stock system. This can result in a small exhaust leak, but won't effect performance. However, our catback seals nicely to an OEM (or OEM style like Cobb) downpipe. You can use a flat gasket or the donut (the donut fits inside our flange). We recommend using a 3" all the way through design where possible.

05-12-2008, 05:17 PM	#72
Spork Silver Member Car: AW 08 STi Fav Mod: snow tires Location: Waltham, MA Posts: 161 Join Date: Dec 2007 Trader Rating: (0)	Re: Harman Motive 2008 STI Catback and Downpipe - Info and Pics!! Are there any left currently in stock, or when is the eta on the next batch? Thank you.

05-12-2008, 05:18 PM	#73
GilMikalian Silver Member Car: '08 DGM STI w/BBS Fav Mod: Britax Roundabout Location: L.A. Posts: 450 Join Date: Jan 2008 Trader Rating: (0)	Re: Harman Motive 2008 STI Catback and Downpipe - Info and Pics!! Man, that sounds nice. Maybe a bit too loud for my needs (DD, family hauler) but very nice.