Welcome to the North American Subaru Impreza Owners Club Thursday April 24, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Reviews > Car Part Reviews

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 02-04-2014, 11:16 PM   #1
joek92
Scooby Newbie
Member Sales Rating: (4)
 
Member#: 353938
Join Date: Apr 2013
Chapter/Region: South East
Location: TN
Vehicle:
2007 STI
WRB

Default QTP Electronic Exhaust Cutout info

(also in the cutout thread) http://forums.nasioc.com/forums/show...+cutout+thread
QTP on my downpipe (07 STI). Here is a link of how it sounds at idle.
https://www.youtube.com/watch?v=ueFjqzxoB8g

Pros:
Loud! (but not as loud as a naturally aspirated engine)
Turbo sounds like a jet liner
Rev matching for heel-toe downshifts is beautifully quick, esp compared to stock exhaust (this can prevent shift lock, which is dangerous at the limit of traction on a twisty road)
Can open partially to get right sound
Feels like a quality, heavy duty unit
More power (hope to post an A/B dyno graph soon)

Cons:
Get a tune! (may not apply to all, but at least monitor the vitals)
Cost to install (make sure you want to keep your downpipe)
Switch is a B**** to install (have it wired in if you're not experienced)
Scrapes sometimes (depends on mounting location)

I didn't list 'leaks' as a con because although it may leak I can't really tell. QTP says it constantly applies pressure to minimize leaks.. whatever.

I put the switch in the blank insert to the left of the I/C spray button. It wiggles a little but otherwise fits perfectly. Sometimes you bump it getting in and out. However, the coin tray shattered the fuse so make sure it is out of the way (zip ties).

For tuning, I plan on getting a conservative map closed and an aggressive map open.

*EDIT: an established tuning shop recommended a separate map open vs. closed. Some say you need a tune some say you don't. Maybe a tune will maximize the benefit. I ran mine open and it lost power dramatically around 5k, shortly after peak boost. May have been overboost fuel cut.*



* Registered users of the site do not see these ads.

Last edited by joek92; Yesterday at 08:51 AM.
joek92 is offline   Reply With Quote
Old 02-07-2014, 10:56 AM   #2
norkkron
Scooby Newbie
Member Sales Rating: (0)
 
Member#: 180679
Join Date: May 2008
Location: San Francisco
Vehicle:
2005 STI
Aspen White

Default

Looks & sounds awesome
norkkron is online now   Reply With Quote
Old 02-09-2014, 02:33 PM   #3
joek92
Scooby Newbie
Member Sales Rating: (4)
 
Member#: 353938
Join Date: Apr 2013
Chapter/Region: South East
Location: TN
Vehicle:
2007 STI
WRB

Default

Thanks man. It's a lot of fun
joek92 is offline   Reply With Quote
Old 02-21-2014, 06:20 AM   #4
RPVwrx
Scooby Newbie
Member Sales Rating: (0)
 
Member#: 368810
Join Date: Sep 2013
Chapter/Region: SCIC
Location: Los Angeles, CA
Vehicle:
2013 WRX
Graphite

Default

Nice! How does DMH cutouts compare to the QTP. Looking to do this myself, but hard to find tuning shop that is willing to install.
RPVwrx is offline   Reply With Quote
Old 02-21-2014, 02:43 PM   #5
joek92
Scooby Newbie
Member Sales Rating: (4)
 
Member#: 353938
Join Date: Apr 2013
Chapter/Region: South East
Location: TN
Vehicle:
2007 STI
WRB

Default

I don't know about DMH. What I can say is that QTP redesigned their motor housing and it's beefy. All the parts are high quality. I just removed my downpipe and the switch cable unhooks easily.

My tuning shop installed mine for about $140 I think? could be wrong...
not including wiring.

Keep in mind you will probably need the tune adjusted. I haven't rev'd mine open over 4k rpms again and won't until I get a tune.
joek92 is offline   Reply With Quote
Old Yesterday, 08:40 AM   #6
joek92
Scooby Newbie
Member Sales Rating: (4)
 
Member#: 353938
Join Date: Apr 2013
Chapter/Region: South East
Location: TN
Vehicle:
2007 STI
WRB

Default

I think I was getting overboost fuel cut. Not so good. That was on a tune with stock cat back. Now with my 3" tbe tune it should be ok to boost with the dump open. Kinda feels like a shot in the dark

Last edited by joek92; Yesterday at 08:52 AM.
joek92 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 01:16 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.