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01-28-2013, 08:14 PM | #1 |
Scooby Newbie
Member#: 281019
Join Date: Apr 2011
Chapter/Region:
South East
Location: Myrtle Beach
Vehicle:2011 Impreza WRX WRB |
2011 wrx overboost with ap ots stage 2
So I was on the way home tonight cruising in 5th gear, downshifted into 4th then 3rd and gave it a boot full. Normally the car hits target boost around 17psi +- a little. However this time it spiked at 20psi around 5500 rpm, then hit what sounded like a rev limiter, then it lost power. I looked down and the whole dash was lit up. CEL, Traction control and flashing cruise light. I checked the code and it was a turbo/waste gate (A) solenoid (parameter/performance) code. I was thinking maybe the solenoid is going bad and the waste gate is staying closed? I'm not sure. Also after the event I noticed the car building boost ALOT quicker than it used to. Any ideas/ thoughts/ help would be awesome. Thanks guys!
Car is running Cobb OTS stage 2 AEM 93, Full Invidia TBE and AEM CAI.
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01-28-2013, 08:18 PM | #2 |
Scooby Specialist
Member#: 308550
Join Date: Jan 2012
Chapter/Region:
MWSOC
Location: South West Michigan
Vehicle:2006 Wrx STi Aspen White |
I think what you are experiencing boost creep. But what you need to do is a 3rd gear pull from around 2000rpm if you can do so safely.
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01-28-2013, 08:36 PM | #3 |
Scooby Newbie
Member#: 297565
Join Date: Oct 2011
Location: Dartmouth, MA
Vehicle:2011 WRX hatch Silver |
I would def pull a log. Could just be a freak boost spike. Won't realize without more info.
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01-28-2013, 08:43 PM | #4 |
Scooby Specialist
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Join Date: Jan 2012
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Location: South West Michigan
Vehicle:2006 Wrx STi Aspen White |
As I understand it "boost spike" can occur when a car will hit peak boost. For example if his peak boost was 17psi and he hit 20 psi at 3800 rpm this would be a boost spike. Boost creep is when boost isn't tapering down to 14.5 psi for example. Boost creep occurres when the waste gate cannot pass enough exhaust through it. This causes boost to increase as rpm's increase.
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01-29-2013, 10:10 AM | #5 | |
NASIOC Vendor
Member#: 4803
Join Date: Mar 2001
Location: Austin, TX
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Quote:
Once you've completed that, try to get a data log as outlined in the video below (if you can do so safely). You can post the log up on google docs (make sure to set the permissions to public) and post the link here. Bill |
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01-29-2013, 03:30 PM | #6 |
Scooby Newbie
Member#: 281019
Join Date: Apr 2011
Chapter/Region:
South East
Location: Myrtle Beach
Vehicle:2011 Impreza WRX WRB |
You're the man Bill! I'll get it done as soon as I can. Only thing I was really confused on is I had been running the same tune for almost a year with no probs. But I did move recently and the air is a lot colder here. Not sure. I'll post the data up tonight or tomorrow morning.
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01-29-2013, 08:30 PM | #7 | |
Scooby Newbie
Member#: 281019
Join Date: Apr 2011
Chapter/Region:
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Location: Myrtle Beach
Vehicle:2011 Impreza WRX WRB |
Quote:
https://docs.google.com/spreadsheet/...oRWJ1aXc#gid=0 https://docs.google.com/spreadsheet/...EdGpBRWc#gid=0 |
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01-30-2013, 09:45 AM | #8 | |
NASIOC Vendor
Member#: 4803
Join Date: Mar 2001
Location: Austin, TX
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Quote:
Bill |
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01-30-2013, 10:04 AM | #9 |
Scooby Newbie
Member#: 281019
Join Date: Apr 2011
Chapter/Region:
South East
Location: Myrtle Beach
Vehicle:2011 Impreza WRX WRB |
Will do, I won't be able to check until Friday though. Left the car in the garage and I'm on duty for two days. I'll be back then. Thanks.
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02-01-2013, 10:01 AM | #10 | |
Scooby Newbie
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Join Date: Apr 2011
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Vehicle:2011 Impreza WRX WRB |
Quote:
Ok this should be the right one. I didnt do a full reflash the first time, it was just the realtime. |
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02-01-2013, 10:29 AM | #11 | |
NASIOC Vendor
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Join Date: Mar 2001
Location: Austin, TX
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Quote:
Bill |
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02-01-2013, 10:48 AM | #12 |
Scooby Newbie
Member#: 281019
Join Date: Apr 2011
Chapter/Region:
South East
Location: Myrtle Beach
Vehicle:2011 Impreza WRX WRB |
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02-01-2013, 10:53 AM | #13 | |
NASIOC Vendor
Member#: 4803
Join Date: Mar 2001
Location: Austin, TX
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Quote:
Bill |
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02-01-2013, 10:59 AM | #14 |
Scooby Newbie
Member#: 281019
Join Date: Apr 2011
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Location: Myrtle Beach
Vehicle:2011 Impreza WRX WRB |
crap sorry forgot to add that part, it was in the next line where is starts all the verbage details about the map. It does say SLWG so it reads (Stage2+AEM93 MT v310 SLWG).
Sorry for the confusion. |
02-01-2013, 12:22 PM | #15 | |
Scooby Newbie
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Quote:
Sorry for the confusion |
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02-01-2013, 12:41 PM | #16 | |
NASIOC Vendor
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Join Date: Mar 2001
Location: Austin, TX
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Quote:
If you can do so safely, try to get some additional logs (of SLWG map) but add the "Inj. Duty Cycle" and "Intake Temp." monitors to the log (nothing else). You can do this by going to "Monitor" -> "Set Data Log List" and checking those two parameters. If you can get logs when it is colder out as well, that would be a good comparison. Bill |
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02-01-2013, 01:37 PM | #17 | |
Scooby Newbie
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Quote:
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01-27-2016, 03:24 PM | #18 |
Scooby Newbie
Member#: 372769
Join Date: Nov 2013
Chapter/Region:
MWSOC
Location: Columbus, Ohio
Vehicle:2011 WRX WRB |
Updates?
Good Afternoon, All!
I'm recently experiencing the same issue running a similar (COBB SF Intake + Invidia TBE) setup. Has anyone noticed any updates? Thanks! |
02-10-2016, 04:41 PM | #19 |
Scooby Specialist
Member#: 353788
Join Date: Apr 2013
Chapter/Region:
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Location: S Florida
Vehicle:1997 Cherokee Tuned by AlanSnackbar |
welcome to Boost Creep fellas. Cold out + intake/dowpipe can = creep
Cobb is helping you try and control it but the problem is mechanical not tune based. IMO take the intake off during cold season. |
02-10-2016, 05:50 PM | #20 |
Scooby Specialist
Member#: 164942
Join Date: Nov 2007
Vehicle:2015 Porsche Cayman |
If a car is prone to creep, even if its never done it before, a cold air intake will make it do it. Go back to the stock intake for the winter.
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02-23-2016, 02:34 AM | #21 |
Scooby Newbie
Member#: 440906
Join Date: Feb 2016
Location: Pittsburgh
Vehicle:15 Stage 2 STI Ice Silver |
The problem is the aem cai. I talked with matt from innovative tuning in NY and the OTS Maps from cobb are prone to creep without proper boost control. My suggestion since I am in the same boat. I have a full invidia tbe and catless(even more boost creep). Take off the i take until you can get a ewg setup and a ebcs then put the intake back on and get a protune directly after. Or get rid of the intake if you dont want too spend the money on the proper setup
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02-26-2016, 06:33 PM | #22 |
Scooby Specialist
Member#: 353788
Join Date: Apr 2013
Chapter/Region:
South East
Location: S Florida
Vehicle:1997 Cherokee Tuned by AlanSnackbar |
It's not the maps fault. It's a mechanical issues that can be semi mitigated by swapping out some parts and tuning. Ultimately there is a point where you can't control it without drastic measures
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