|
|
|
|
Thread Tools | Display Modes |
05-21-2012, 11:39 AM | #376 |
Scooby Newbie
Member#: 316629
Join Date: Apr 2012
|
Is boost creep still something your need to worry about in an 08wrx with no engine mods except for an exaughst (down pipe included) and intake?
Or is this really only a problem for ppl who do real engine work and blow the doors off more modest modifiers such as myself?
* Registered users of the site do not see these ads.
|
05-21-2012, 11:57 AM | #377 | |
Scooby Specialist
Member#: 290307
Join Date: Aug 2011
|
Quote:
I personally have an intake, catless downpipe and Nameless Performance muffler deletes, and I have 0 boost creep. I still have the stock midpipe though, so it does cause a little bit of restriction to help cut down on the possibility of boost creep. If your catback has mufflers, boost creep shouldn't be a problem, as it's fairly rare on the newer cars. Worst case, you'll have to take off the aftermarket intake during the winter and install the stocker. |
|
05-21-2012, 11:58 AM | #378 |
Scooby Specialist
Member#: 245218
Join Date: Apr 2010
Chapter/Region:
South East
Location: FL
Vehicle:2013 STI Limited |
08+ cars are especially prone to boost creep with an aftermarket intake and a turboback exhaust.
If you leave the stock intake on the car they are much less likely to have boost creep and if it does its usually not that severe and can be tuned out. |
05-21-2012, 12:59 PM | #379 | |
Scooby Specialist
Member#: 290307
Join Date: Aug 2011
|
Quote:
|
|
05-21-2012, 03:30 PM | #380 | |
Scooby Specialist
Member#: 245218
Join Date: Apr 2010
Chapter/Region:
South East
Location: FL
Vehicle:2013 STI Limited |
Quote:
Boost creep is a direct relation to waste gate duty. If you are boost creeping and your wastegate DC is 40% then you CAN tune it out. It is common for an 08+ WRX with full turboback exhaust and STOCK intake to experience a small amount of creep. However, with the proper tune it can be eliminated since the WGDC's are still in a high enough range that it can be adjusted. Move to an aftermarket intake AND full turboback exhaust and now you are starting to get the WGDC's so low that even at 0% DC the car is over boosting. This comes to the point where it cannot be tuned out. What year WRX do you have? Have you tuned any 08+ WRX/STI's yourself and speak from experience? EWG is an option, but not the only path to solving boost creep on the GR's. |
|
05-21-2012, 05:09 PM | #381 |
Scooby Newbie
Member#: 209142
Join Date: Apr 2009
Location: Fort Lauderdale, Florida
Vehicle:2015 STI WRB |
I know this thread started off as an STI thread but I am assuming this applies to all turbo cars. I have an 07 wrx. AP. cobb down pipe and a stromung cbe. I still have not put them on yet. Should I be worried? Should I consider porting the WG before even putting them on and getting it tuned? I am runing stock everything else including intake. Is an external waste gate the more ideal way to go rather than porting the stock one? Not sure I understand what an EWG set up is still reading into it.
|
05-24-2012, 12:30 AM | #382 | |
Scooby Newbie
Member#: 206912
Join Date: Mar 2009
Chapter/Region:
International
Location: Waaaaay North
Vehicle:2006 Forester XT DGM |
Quote:
Boost creep is when the tuning is at 100% and your boost is still 'creeping' higher, due to mechanical flow limitations at the wastegate. |
|
05-24-2012, 10:19 AM | #383 | |
Scooby Specialist
Member#: 245218
Join Date: Apr 2010
Chapter/Region:
South East
Location: FL
Vehicle:2013 STI Limited |
Quote:
Who made this definition? If the ECU cannot remove enough WGDC to keep the boost from climbing but the WGDC is still at 40% would you just call this overboosting then instead of boost creep? So according to semantics, if you can tune it out its overboosting, but if you cant its boost creep? Semantics aside, everything else I have said is true and accurate. |
|
06-05-2012, 12:31 AM | #384 |
Scooby Newbie
Member#: 291672
Join Date: Aug 2011
Vehicle:05 Wrx |
I have the o2 sensor code being thrown on my 05 wrx with tbe and results in a cel, will my Cobb ap v2 stage 2 tune take care of the problem?
|
06-05-2012, 12:30 PM | #385 | |
Scooby Specialist
Member#: 73884
Join Date: Nov 2004
Chapter/Region:
HIIC
Location: Honolulu
Vehicle:2016 STi Hyper Blue |
Quote:
From one of the map notes on the Cobb map web page CEL Codes Defeated [WHEN USING AS BASE MAP]: P0037 - Rear O2 Sensor Heater Control Circuit Low P0038 - Rear O2 Sensor Heater control Circuit High P0137 - Rear O2 Sensor Circuit Low Voltage P0138 - Rear O2 Sensor Circuit High Voltage P0139 - Rear O2 Sensor Circuit Slow Response P0420 - Catalyst System Efficiency Below Threshold P0545 - Exhaust Gas Temperature Sensor Circuit Low P0546 - Exhaust Gas Temperature Sensor Circuit High P1301 - Misfire Detected (High Temperature Exhaust Gas) P1312 – Exhaust Gas Temperature Sensor Malfunction P1544 – Exhaust Gas Temperature Too High Cobb map web page. |
|
06-05-2012, 03:21 PM | #386 |
Scooby Specialist
Member#: 171245
Join Date: Feb 2008
Chapter/Region:
TXIC
Location: Aeh-town
Vehicle:99 328i STX for 2013? |
Ok, I've read through a good bit of this, and just want the educated opinions I can get here.
I have an 08' WRX that shortly will have a CNT Catted DP, Possibly the Grimmspeed Ported manifold, and depending on advice, without the GS up-pipe. It will have the stock Intake, and the custom exhaust with muffler delete, w/ turndown. This if for SCCA STX Solo, and will have a Cobb pro-tune done, or one at MZM here in austin, with, per rules, boost not touched. Boost Creep an issue ? I guess a slight amount would be welcome, as it's legal as long as it isn't changed manually by tune. From what I've read, since the boost will be low, and I'll be keeping at least one cat, dangerous creep shouldn't be an issue, but I'm wondering how much I may still get ? This is what it looks like a typical STX tune is going to look like for the 08' (Red) |
06-05-2012, 04:31 PM | #387 | |
Scooby Specialist
Member#: 245218
Join Date: Apr 2010
Chapter/Region:
South East
Location: FL
Vehicle:2013 STI Limited |
Quote:
|
|
06-06-2012, 10:13 PM | #388 |
Scooby Specialist
Member#: 171245
Join Date: Feb 2008
Chapter/Region:
TXIC
Location: Aeh-town
Vehicle:99 328i STX for 2013? |
Well, it's not so castrated. One of Clubs STU guys makes more hp from his STU map than a straight Stage 2.
It's just the rules for Street Touring. Each class is one step from stock and ST is just one step from Stock. You can begin messing with boost in Street Prepared. I believe they are trying to have classes for different levels of budget. It's a good idea, as I don't think I'd enjoy running the 08' on stock spring rates, but don't have the $$$ to do a whole built engine, etc. It's also my daily, so I don't want to have to do too much work to get it back livable after an event. ST class is a good fit for me this year, until I can afford a tow vehicle. |
06-07-2012, 09:29 AM | #389 |
Scooby Specialist
Member#: 245218
Join Date: Apr 2010
Chapter/Region:
South East
Location: FL
Vehicle:2013 STI Limited |
Ah, I failed to notice that was a graph from an 08 WRX with the td04. That explains the fall off in boost and HP in the upper RPM's. I suppose on the track you don't spend much time in that area or the RPM band anyhow.
|
06-18-2012, 12:30 AM | #390 |
Scooby Newbie
Member#: 322650
Join Date: Jun 2012
|
So let me get this straight. I have an 05 wrx I'm looking to install a ap, and I have a turbo xs cat less dp to install on it. So not matter what as soon as I install the dp I'm going to get boost creep? And one of the only ways to get rid of it is to port the Wastegate? any other options?
|
06-18-2012, 03:51 AM | #391 | |
Scooby Specialist
Member#: 284792
Join Date: Jun 2011
Chapter/Region:
RMIC
Location: Vanilla Valley, CO
Vehicle:2011 STI Blurple |
Quote:
|
|
06-27-2012, 07:40 AM | #392 |
Scooby Guru
Member#: 133146
Join Date: Nov 2006
Location: SC
Vehicle:07 FPgreen 7.37@95 WRX VF39+E85 12.0, 121mph |
I am getting boost creep with my FP black at 27psi ... I can run 26psi without issues but if I turn it up a little . I am going to have to pull my turbo and port it.
I would recommend that everytime people get a new turbo they should port the wastegate |
06-27-2012, 08:48 PM | #393 |
Scooby Newbie
Member#: 303156
Join Date: Dec 2011
Chapter/Region:
AKIC
Location: Anchorage, Alaska and L.A.
Vehicle:2012 Sti Dark Grey Metallic |
Ive been running an Injen CAI since nov '11 with no problems. Added stage one Cobb AP dec '11, no problem. Dropped in an Injen catless downpipe onto my STP exhaust and reflashed to stage 2 Cobb AP about 2 weeks ago, PROBLEM! LoL When I am cruisin around 70Mph the check engine light comes on and the SI-drive "S" and cruise control light start blinking... Cobb code reader says P0137 O2 sensor circuit low voltage (bank 1 sensor 2). I went back and checked all of the hoses and connections everything looks good. Im wondering if I need a custom tune? I want to try and diag problem before I take it to the dealership.
|
06-27-2012, 09:30 PM | #394 | |
Scooby Specialist
Member#: 284792
Join Date: Jun 2011
Chapter/Region:
RMIC
Location: Vanilla Valley, CO
Vehicle:2011 STI Blurple |
Quote:
Second, the code you are getting probably has to do with the fact that you are running a catless downpipe. You can fix this with the accessport. |
|
06-27-2012, 10:04 PM | #395 | |
*** Banned ***
Member#: 16200
Join Date: Mar 2002
Vehicle:OK buy Nates beans westcoastroasting.com |
Quote:
what spring is in the wg actuator??? |
|
06-27-2012, 10:07 PM | #396 | |
*** Banned ***
Member#: 16200
Join Date: Mar 2002
Vehicle:OK buy Nates beans westcoastroasting.com |
Quote:
the 'cobb code reader' isnt a code reader you will blow it up soon i think |
|
06-28-2012, 04:02 AM | #397 |
Scooby Newbie
Member#: 303156
Join Date: Dec 2011
Chapter/Region:
AKIC
Location: Anchorage, Alaska and L.A.
Vehicle:2012 Sti Dark Grey Metallic |
Im new to the forum and was unable to create a new post didn't know a better way of getting my question out there. And my AP is what showed me the code P0137 in the trouble shooting function. I wasnt calling it a code reader just describing the tool I used and what it displayed.
|
06-28-2012, 04:18 AM | #398 | |
Scooby Specialist
Member#: 313311
Join Date: Mar 2012
Chapter/Region:
MWSOC
Location: Twin Cities, MN
|
Quote:
The Cobb Stage 2 tune is intended for either Cobb or AEM intake (different tune for each), with Cobb catted DP (or similar). The requirements are all clearly written in the notes for the tune. You are running an intake, and a catless downpipe, on an OTS tune not designed for either one .. of course your having issues. |
|
06-28-2012, 04:55 AM | #399 | |
Scooby Newbie
Member#: 303156
Join Date: Dec 2011
Chapter/Region:
AKIC
Location: Anchorage, Alaska and L.A.
Vehicle:2012 Sti Dark Grey Metallic |
Quote:
Downloading Cobb's free tuning program tomorrow got too excited with everything didnt take time to think things through. I'm hopeful this will solve the problem. Thanks! |
|
07-29-2012, 03:04 AM | #400 |
Scooby Newbie
Member#: 204429
Join Date: Mar 2009
|
So I read through the entire thread and from what I understand, boost creep can not be fixed via a tune and porting the IWG doesn't necessarily fix the issue. Correct?
Also, one of the ways to handle boost creep is by utilizing an EWG. At least that's what I've read. I also read that a 3-port boost control solenoid can do the trick (http://forums.nasioc.com/forums/show....php?t=2334925). True? Finally, is boost creep only an issue in higher gears (5th-6th) at rpm's above 5k? Or is the gear irrelevant? |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Everything you need to know about a Cutout? | zacxzx | Newbies & FAQs | 25 | 05-15-2009 06:31 PM |
everything you need to know about turbos | dankEe | Tri-State Area Forum | 1 | 11-08-2007 05:59 PM |
Everything I Need to Know about Raleigh Durham But Was afraid to Ask | Cdiff | South East Region Forum | 5 | 12-13-2005 02:13 PM |
Everything you want to know about cheap boost control | desiwrx02 | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 86 | 03-09-2005 08:21 AM |
Everything you wanted to know about the WRC but were afraid to ask | rsquire_downunder | Motorsports | 7 | 02-12-2003 11:28 AM |