Welcome to the North American Subaru Impreza Owners Club Friday August 1, 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 Subaru Models > Impreza Forum

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 03-23-2012, 11:15 PM   #1401
shaggydog
Scooby Newbie
 
Member#: 247390
Join Date: May 2010
Chapter/Region: TXIC
Vehicle:
'11 STi

Default

Heres the trunk lighting. More pics. Been meaning to do this for the longest time on mine and my wifes OB. Just been too lazy.
* Registered users of the site do not see these ads.
shaggydog is offline   Reply With Quote
Old 03-24-2012, 02:12 AM   #1402
jege41
Scooby Newbie
 
Member#: 280754
Join Date: Apr 2011
Default 2011 wrx catless

Hi

I have installed a catless DP on my 2011 WRX,stock exhaust, with Cobb AP Stage 2 91

I have read many threads explaining that boost creep can be a real concern. What would be the proper parameters to monitor with the AP in real time? Also could you please provide some numbers as when I should be concerned?

I don't have a stand alone boost gauge as of now.

Thanks
jege41 is offline   Reply With Quote
Old 03-24-2012, 02:15 AM   #1403
Celery GT-5
Scooby Guru
 
Member#: 98210
Join Date: Oct 2005
Chapter/Region: Tri-State
Location: Upstate NY
Vehicle:
2015 WRX Premium 6MT
WRB

Default

I don't think its the best idea to run cobb's ots map with a catless dp

I think if you see anything in the 20s you should probably let off the gas though..lol
Celery GT-5 is offline   Reply With Quote
Old 03-24-2012, 02:20 AM   #1404
jege41
Scooby Newbie
 
Member#: 280754
Join Date: Apr 2011
Default

Hi
Ok thanks for that.
I was saw 18.5 and that was hitting it pretty hard, but not for long though.
I guess smacking it in 3rd for say 20 seconds or so should give me somwhere near the max reading, or would I be better in another gear?
Weather plays a role too I understand?
Thanks

Quote:
Originally Posted by Celery GT-5 View Post
I don't think its the best idea to run cobb's ots map with a catless dp

I think if you see anything in the 20s you should probably let off the gas though..lol
jege41 is offline   Reply With Quote
Old 03-24-2012, 02:27 AM   #1405
Celery GT-5
Scooby Guru
 
Member#: 98210
Join Date: Oct 2005
Chapter/Region: Tri-State
Location: Upstate NY
Vehicle:
2015 WRX Premium 6MT
WRB

Default

i dont really know man, I also have a catless dp, I haven't seen any crazy numbers yet, but supposedly its worse in the cold. What is your max boost supposed to be?

torqued performance stage 2 is 19, i think cobb is a bit more conservative
Celery GT-5 is offline   Reply With Quote
Old 03-24-2012, 03:09 AM   #1406
jege41
Scooby Newbie
 
Member#: 280754
Join Date: Apr 2011
Default

Hi
OK those numbers seem to be ok then @ 18.5
I get mostly 18.3 smacking it around in short course, but hit 18.5 in long.
Its lots of fun now though have to admit. At first I was kind of oh ok but in the twisties its really freakin quick
Regardless I'm gonna keep an eye on it for some time to come yet.
Funny as I can't really hear the turbo, must be my old man ears?

Quote:
Originally Posted by Celery GT-5 View Post
i dont really know man, I also have a catless dp, I haven't seen any crazy numbers yet, but supposedly its worse in the cold. What is your max boost supposed to be?

torqued performance stage 2 is 19, i think cobb is a bit more conservative
jege41 is offline   Reply With Quote
Old 03-24-2012, 03:36 AM   #1407
Celery GT-5
Scooby Guru
 
Member#: 98210
Join Date: Oct 2005
Chapter/Region: Tri-State
Location: Upstate NY
Vehicle:
2015 WRX Premium 6MT
WRB

Default

yeah all that stuff is right...u hear the turbo more and at first it doesnt seem like a big deal then u push the car a little and u realize there is just a lot more substance than there was before
Celery GT-5 is offline   Reply With Quote
Old 03-24-2012, 07:02 AM   #1408
lovin' it
Scooby Specialist
 
Member#: 236710
Join Date: Jan 2010
Chapter/Region: NESIC
Location: Indian Township, Maine
Vehicle:
2010 WRX Five Door
WRB!

Default

Third gear pulls are the best IMHO.
lovin' it is offline   Reply With Quote
Old 03-24-2012, 12:07 PM   #1409
PearlRex11
Scooby Specialist
 
Member#: 284420
Join Date: Jun 2011
Chapter/Region: SWIC
Location: Lakewood, Ca
Vehicle:
2011 WRX Sedan
SWP

Default

Quote:
Originally Posted by Celery GT-5
i dont really know man, I also have a catless dp, I haven't seen any crazy numbers yet, but supposedly its worse in the cold. What is your max boost supposed to be?

torqued performance stage 2 is 19, i think cobb is a bit more conservative
Cold weather is where you really want to keep an eye on it. It should state on your AP in the map details what your peak should be. Scroll down to the bottom of the page just before you flash it. If you over boost then try the low Wastegate map (LWG stage 2 map) . You can upload that to your AP from Cobbs site for free. COBB ots maps are not intended for catless so keep that in mind, but you might be able to get away with it for awhile before you do a protune which would be a better option. 3rd gear pulls are where you want to datalog. Datalog from 2500rpm to redline wot.
PearlRex11 is online now   Reply With Quote
Old 03-24-2012, 12:43 PM   #1410
RedLightRex
Scooby Newbie
 
Member#: 314467
Join Date: Mar 2012
Chapter/Region: NESIC
Location: Bristol, CT
Vehicle:
2011 WRX

Default

The stock ECU has compensation tables for air temperature and will reduce WGDC accordingly for colder temps. Cobb does change the compensation tables, but again those expect a high flow cat on the DP. Going catless in cold weather with Cobb OTS Stage 2 map will exacerbate high boost problem. As PearlRex11 said, just be extra careful in the cold weather if you want to stay with the Cobb map.

You are far away from throwing an overboost code, so you should be fine. Changing other things like the top mount IC and pulley will throw a code real quick on Stage 2 cobb map.

I would recommend a stage 2 tune from Torqued Performance. He can adjust the map specifically for a catless DP easily. Once you start doing other mods then a protune on a dyno is ideal.
RedLightRex is offline   Reply With Quote
Old 03-24-2012, 09:26 PM   #1411
Celery GT-5
Scooby Guru
 
Member#: 98210
Join Date: Oct 2005
Chapter/Region: Tri-State
Location: Upstate NY
Vehicle:
2015 WRX Premium 6MT
WRB

Default

i think I may have caused sort of creep today. 4th gear going up hill, needle was going back and forth between 19 and 20 and it made a fluttery sound. Couldn't replicate it, I think just don't do dumb things like floor it up a hill at low rpms in a high gear
Celery GT-5 is offline   Reply With Quote
Old 03-25-2012, 12:32 AM   #1412
tcoffin014
Scooby Newbie
 
Member#: 173734
Join Date: Mar 2008
Chapter/Region: South East
Location: Denham Springs, Louisiana
Vehicle:
2011 WRX
Sexy White Princess

Default

That's kinda how I got boost creep. As soon as I flashed stage 2 (catless dp with cobb ots map) I was trying to make sure it would hit target boost so I floored it in 4th then it just kept climbing to like 23 psi and threw a CEL. So I didn't do that again lol
tcoffin014 is offline   Reply With Quote
Old 03-25-2012, 12:49 AM   #1413
Celery GT-5
Scooby Guru
 
Member#: 98210
Join Date: Oct 2005
Chapter/Region: Tri-State
Location: Upstate NY
Vehicle:
2015 WRX Premium 6MT
WRB

Default

lol nice work
Celery GT-5 is offline   Reply With Quote
Old 03-25-2012, 03:04 AM   #1414
jege41
Scooby Newbie
 
Member#: 280754
Join Date: Apr 2011
Default Catless smell is pretty bad

Hi
Sort of regretting going catless due to the smell, much worse than I anticipated and there is not a thing I can do about it.
Catless pipe for sale next year.
jege41 is offline   Reply With Quote
Old 03-25-2012, 03:16 AM   #1415
captncal
Scooby Specialist
 
Member#: 284508
Join Date: Jun 2011
Chapter/Region: BAIC
Location: Oakland, Ca
Vehicle:
2011 wrx
Silver

Default

My coworker has a catless evo and I must say it is quite harsh. But my hi flow cat smells like a go cart or a lawn mower. Lol or a two stroke.
captncal is offline   Reply With Quote
Old 03-25-2012, 03:21 AM   #1416
jege41
Scooby Newbie
 
Member#: 280754
Join Date: Apr 2011
Default

The good thing is that it may reduce tailgaters

Quote:
Originally Posted by captncal View Post
My coworker has a catless evo and I must say it is quite harsh. But my hi flow cat smells like a go cart or a lawn mower. Lol or a two stroke.
jege41 is offline   Reply With Quote
Old 03-25-2012, 09:56 AM   #1417
Louie
Scooby Guru
 
Member#: 43393
Join Date: Sep 2003
Chapter/Region: MAIC
Location: Middle River
Vehicle:
2011 STi
WRB

Default

Quote:
Originally Posted by jege41 View Post
Hi
Sort of regretting going catless due to the smell, much worse than I anticipated and there is not a thing I can do about it.
Catless pipe for sale next year.
Rather than selling your Catless pipe for a loss then paying more for a new one. Go to an exhaust shop. they can take your catless DP and cut in a cat for much cheaper than loosing money on your catless and buying a new catted one.
Louie is offline   Reply With Quote
Old 03-25-2012, 11:56 AM   #1418
jege41
Scooby Newbie
 
Member#: 280754
Join Date: Apr 2011
Default

Hi
I wondered about that!
Thanks I will consider that option.
If i decide to go that route where would be the best placement, up top or down below.I would assume up top but I'm just a noob so thought I would ask.
Thanks


Quote:
Originally Posted by Louie View Post
Rather than selling your Catless pipe for a loss then paying more for a new one. Go to an exhaust shop. they can take your catless DP and cut in a cat for much cheaper than loosing money on your catless and buying a new catted one.
jege41 is offline   Reply With Quote
Old 03-25-2012, 12:00 PM   #1419
PearlRex11
Scooby Specialist
 
Member#: 284420
Join Date: Jun 2011
Chapter/Region: SWIC
Location: Lakewood, Ca
Vehicle:
2011 WRX Sedan
SWP

Default

Quote:
Originally Posted by jege41
Hi
I wondered about that!
Thanks I will consider that option.
If i decide to go that route where would be the best placement, up top or down below.I would assume up top but I'm just a noob so thought I would ask.
Thanks
Up top, they operate better when they are hot from what understand. They also work faster after cold starts because they heat up sooner. Most aftermarket dp's have them almost right up against the bellmouth which might be hard for an exhaust shop to do though.
PearlRex11 is online now   Reply With Quote
Old 03-25-2012, 01:33 PM   #1420
Louie
Scooby Guru
 
Member#: 43393
Join Date: Sep 2003
Chapter/Region: MAIC
Location: Middle River
Vehicle:
2011 STi
WRB

Default

Quote:
Originally Posted by jege41
Hi
I wondered about that!
Thanks I will consider that option.
If i decide to go that route where would be the best placement, up top or down below.I would assume up top but I'm just a noob so thought I would ask.
Thanks
I would have them put it in the stock location just before the cbe flange. You dont want it to interfere with wastegate exhaust flow or any exhaust flow really.
Louie is offline   Reply With Quote
Old 03-25-2012, 02:01 PM   #1421
Celery GT-5
Scooby Guru
 
Member#: 98210
Join Date: Oct 2005
Chapter/Region: Tri-State
Location: Upstate NY
Vehicle:
2015 WRX Premium 6MT
WRB

Default

yeah if i ever want a cat that's what im doing
Celery GT-5 is offline   Reply With Quote
Old 03-25-2012, 02:38 PM   #1422
Louie
Scooby Guru
 
Member#: 43393
Join Date: Sep 2003
Chapter/Region: MAIC
Location: Middle River
Vehicle:
2011 STi
WRB

Default

Quote:
Originally Posted by Celery GT-5
yeah if i ever want a cat that's what im doing
I'm considering doing that because we have to do emission checks every two years.
Louie is offline   Reply With Quote
Old 03-25-2012, 02:42 PM   #1423
Celery GT-5
Scooby Guru
 
Member#: 98210
Join Date: Oct 2005
Chapter/Region: Tri-State
Location: Upstate NY
Vehicle:
2015 WRX Premium 6MT
WRB

Default

from what i hear cobb's cat location is the best and for the ~$300 price diff im sure i can get a cat or 3 thrown in there
Celery GT-5 is offline   Reply With Quote
Old 03-25-2012, 09:58 PM   #1424
shaggydog
Scooby Newbie
 
Member#: 247390
Join Date: May 2010
Chapter/Region: TXIC
Vehicle:
'11 STi

Default

Quote:
Originally Posted by Louie View Post
I would have them put it in the stock location just before the cbe flange. You dont want it to interfere with wastegate exhaust flow or any exhaust flow really.
This, you want the cat towards the tail end of the DP ie Cobb, Harman Motive, MadDad...
shaggydog is offline   Reply With Quote
Old 03-25-2012, 09:59 PM   #1425
BullyWRX
Scooby Specialist
 
Member#: 258756
Join Date: Sep 2010
Chapter/Region: South East
Location: Wilimgton, NC
Vehicle:
2011 WRX
SWP

Default

Quote:
Originally Posted by Louie View Post
I'm considering doing that because we have to do emission checks every two years.
I wish! Every year here. Fuuuuuuuuuuuu
BullyWRX 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Differences of 2011 wrx motor and 2011 sti motor stpkenton Factory 2.5L Turbo Powertrain 3 03-06-2012 11:03 AM
Differences of 2011 wrx motor and 2011 sti motor stpkenton Newbies & FAQs 3 05-12-2011 09:27 PM
2011 Subaru shifter fitment! All TWM Shifters still fit! TWM Performance Vendor Announcements 14 02-28-2011 03:27 PM
iPod 3g DLO Jam Jacket (clear) and Radtech 3g Indigo Podsleev 10gb/15gb agentmaxwell Private 'For Sale' Classifieds 1 05-24-2006 07:41 PM
Attn: Clayton, Ben and all others involved in the 6MT discussion. sherifx Mid West Subaru Owners Club Forum -- MWSOC 1 07-31-2002 03:00 AM


All times are GMT -4. The time now is 12:27 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.