Welcome to the North American Subaru Impreza Owners Club Monday March 18, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC General > Newbies & FAQs

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.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 04-01-2013, 10:54 PM   #1
sedonarex13
Scooby Newbie
 
Member#: 313573
Join Date: Mar 2012
Location: BOONE ,NC
Vehicle:
06 wrx
silver

Default Am i over boosting?

I am still trying to figure out if i have issues or not, cant seem to get a answer. 06 wrx, catless tbe, running cobb stage 2 93 octane mt. My car has hit as high as 19.5 psi in 3rd gear punching it from 3500 rpm but it will just peak then drop back down and hold at 14 or 15 psi. I took some logs but my shaty computer will not recognize my ap so data logging is not realy an option. I simply want to know if i am safe with these boost numbers.
* Registered users of the site do not see these ads.
sedonarex13 is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 04-01-2013, 11:06 PM   #2
420bugeye
Scooby Newbie
 
Member#: 283513
Join Date: May 2011
Chapter/Region: MWSOC
Location: Nd/Mn
Vehicle:
2012 Wrx

Default

Just look at the notes for your ap map on cobb website where it says maximum psi.Simple as that. Prepare for flame fer not searchin first
420bugeye is offline   Reply With Quote
Old 04-01-2013, 11:13 PM   #3
sedonarex13
Scooby Newbie
 
Member#: 313573
Join Date: Mar 2012
Location: BOONE ,NC
Vehicle:
06 wrx
silver

Default

I can not view the maps on cobbs website i forgot to mention that my computer is one of the first ones ever made lol
sedonarex13 is offline   Reply With Quote
Old 04-01-2013, 11:17 PM   #4
vision.dynamix
Scooby Guru
 
Member#: 139955
Join Date: Feb 2007
Chapter/Region: NESIC
Location: Boston
Vehicle:
2015 Subaru STI
17Forester / 18Crosstrek

Default

What's your target boost?
What's your actual boost?
Is actual boost higher than target boost? If yes, then you're over boosting. Else, you're not over boosting.
vision.dynamix is offline   Reply With Quote
Old 04-02-2013, 08:08 AM   #5
masterforce
Scooby Newbie
 
Member#: 221580
Join Date: Aug 2009
Chapter/Region: MWSOC
Location: Omaha, NE
Vehicle:
2011 WRX STI
Satin White Pearl

Default

You should have read the Notes for the map before even installing it......Anyways here is what the notes say for 06-07 WRX...

Stage2 93 MTv300
o Fuel Requirements: 93 - 94 octane or better
o Intake Requirements: Stock airbox or COBB Tuning SF Intake
o Exhaust Requirements: Upgraded turbo-back exhaust
o Boost Targets: ~15.2psi peak boost pressure tapering down to ~10.0psi by the 6700RPM redline, +/- 0.7psi

If you numbers you are saying are spot on, then even with +/- 0.7psi, you are overboosting...
masterforce is offline   Reply With Quote
Old 04-02-2013, 08:35 AM   #6
booSTin-scoobs
*** Banned ***
 
Member#: 340148
Join Date: Dec 2012
Chapter/Region: MAIC
Location: pittsburgh
Vehicle:
2004 wrx - 18g
305whp - 282wtq

Default

Call cobb and see what they say about your overboosting. Then go get a pro tune
booSTin-scoobs is offline   Reply With Quote
Old 04-02-2013, 09:05 AM   #7
greenplates
Scooby Specialist
 
Member#: 239162
Join Date: Feb 2010
Chapter/Region: BAIC
Location: Sacramento, CA
Default

Quote:
Originally Posted by sedonarex13
I am still trying to figure out if i have issues or not, cant seem to get a answer. 06 wrx, catless tbe, running cobb stage 2 93 octane mt. My car has hit as high as 19.5 psi in 3rd gear punching it from 3500 rpm but it will just peak then drop back down and hold at 14 or 15 psi. I took some logs but my shaty computer will not recognize my ap so data logging is not realy an option. I simply want to know if i am safe with these boost numbers.
Also, many guys have Grimspeed 3 port electronic boost control solenoid. This ensures rock solid boost curve without any spikes. This requires a pro tune
greenplates is offline   Reply With Quote
Old 04-09-2013, 02:02 AM   #8
sedonarex13
Scooby Newbie
 
Member#: 313573
Join Date: Mar 2012
Location: BOONE ,NC
Vehicle:
06 wrx
silver

Default

So can i just decrease the boost buy ajusting the wastegate arm?
sedonarex13 is offline   Reply With Quote
Old 04-09-2013, 06:27 AM   #9
HinshawWRX
Medium Frank
Moderator
 
Member#: 140114
Join Date: Feb 2007
Chapter/Region: MAIC
Location: Common Sense, VA
Vehicle:
2020 Subaru
Outback

Default

Do not touch the wastegate arm if you do not know what you are doing. Also do not buy/install an MBC for that same reason.
HinshawWRX is offline   Reply With Quote
Old 04-10-2013, 10:49 PM   #10
sedonarex13
Scooby Newbie
 
Member#: 313573
Join Date: Mar 2012
Location: BOONE ,NC
Vehicle:
06 wrx
silver

Default

Are the wastegates ajustable on a 06 people have been telling me they are electronicly controlled and can not be ajusted
sedonarex13 is offline   Reply With Quote
Old 04-10-2013, 10:52 PM   #11
Nate_1990
Scooby Newbie
 
Member#: 234485
Join Date: Jan 2010
Chapter/Region: NESIC
Location: Massachusetts
Vehicle:
2004 STI
Rally Blue

Default

I have never had any issue with the grimmspeed solenoid. I had it protuned and never seen anything above target boost. Very good product.
Nate_1990 is offline   Reply With Quote
Old 04-11-2013, 01:38 AM   #12
J-mez
Scooby Newbie
 
Member#: 292727
Join Date: Aug 2011
Chapter/Region: NWIC
Location: Washington
Vehicle:
2002 WRX
Silver

Default

You may want to look into the LWG map if you do find that you are overboosting.
J-mez is offline   Reply With Quote
Old 04-11-2013, 06:39 AM   #13
HinshawWRX
Medium Frank
Moderator
 
Member#: 140114
Join Date: Feb 2007
Chapter/Region: MAIC
Location: Common Sense, VA
Vehicle:
2020 Subaru
Outback

Default

Quote:
Originally Posted by sedonarex13 View Post
Are the wastegates ajustable on a 06 people have been telling me they are electronicly controlled and can not be ajusted
Yes, the wastegate is adjustable via the wastegate arm. DO NOT TOUCH IT. If you don't know what you are doing, you will make it worse.
HinshawWRX is offline   Reply With Quote
Old 04-11-2013, 06:41 AM   #14
Ziggyrama
Scooby Specialist
 
Member#: 53665
Join Date: Jan 2004
Chapter/Region: NESIC
Location: Northboro, MA
Vehicle:
2022 BMW M240i
Thundernight

Default

You're spiking, not overboosting. The ECU is overshooting the initial target on approach and settles down eventually. It's not great but not the end of the world either. BTW, if you're reading your boost off the gauge, it is likely slightly higher than what the ECU is seeing in the manifold which means that your actual boost error is not as big as you think. Your gauge is likely reading off the IC which is subject to some pressure loss before the MAP sensor. The only way to accurately assess the situation is to log the car and see what is reported. Your gauge could also be inaccurate and you're sweating for nothing.
Ziggyrama is offline   Reply With Quote
Old 04-11-2013, 12:33 PM   #15
findurpath
Scooby Specialist
 
Member#: 277487
Join Date: Mar 2011
Chapter/Region: NWIC
Location: Bozeman, MT and Lakewood, WA
Vehicle:
2006 CGM WRX Limited
6sp, 18G, Phatron tuned

Default

Get yourself a used laptop or PC that is capable of running the AP Manager program. Or find a friend that will let you install the program on their computer. It doesn't take cutting edge hardware to run it. Then take some logs and have a look at them or post them up. You're talking about the health of your engine here. The only way to know if things are safe is to look at your logs.

It's like saying you think you might be having a heart attack but you can't call 911 because your cell phone is broken.
findurpath is offline   Reply With Quote
Old 04-11-2013, 02:43 PM   #16
sedonarex13
Scooby Newbie
 
Member#: 313573
Join Date: Mar 2012
Location: BOONE ,NC
Vehicle:
06 wrx
silver

Default

The only gauge i have is the ap itself i recently had to send the ap back to cobb because something was broken inside of it but they let me keep my car.tuned and just send it to them so i am currently not driving the car because i have no way of monitoring
sedonarex13 is offline   Reply With Quote
Old 04-11-2013, 03:40 PM   #17
blueninja85
Scooby Newbie
 
Member#: 324091
Join Date: Jun 2012
Default

Doesn't a catless downpipe cause boost creep on the EJ25's creating a overboosting condition? If I remember correctly, Cobb highly recommends a catted downpipe for this very reason. But even then a catted downpipe might cause boost creep. However, a solution to helping fix boost creep, if that is what you're experiencing to port your wastegate.
blueninja85 is offline   Reply With Quote
Old 04-11-2013, 04:01 PM   #18
Shelamae24
Scooby Newbie
 
Member#: 353126
Join Date: Apr 2013
Default

I don't think you are..
Shelamae24 is offline   Reply With Quote
Old 04-11-2013, 04:55 PM   #19
sedonarex13
Scooby Newbie
 
Member#: 313573
Join Date: Mar 2012
Location: BOONE ,NC
Vehicle:
06 wrx
silver

Default

I will wait to get my ap and somehow take some logs and let yall know. Thanx for all the help
sedonarex13 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 11:02 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.