Boost......Normal????
+ Reply to Thread
Results 1 to 11 of 11

This is a discussion on Boost......Normal???? within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; So I have an 06 WRX with a full Cobb TBE and an AP the other day I was out ...

  1. #1
    Registered User Feezor's Avatar
    Join Date
    Nov 2006
    Location
    Ca
    Posts
    438

    Boost......Normal????

    So I have an 06 WRX with a full Cobb TBE and an AP the other day I was out reading the live data (which I do from time to time) and my boost was not hitting the specified 14.9 +/- .7 like cobb states. I have checked all the lines everything is ok. The only time I hit anything within the cobb range was in fourth gear at at about 4000 RPM then by about 500 RPM it had started dropping and by 6000 it was around 9. I have not adjusted the actuator arm or whatever its called so if someone could find that link on here that might help. Also do you think this is mainly because I am using a Cobb OTS map and need a protune. I just think its a little drastic to only hit full boost in 4th gear for 500 RPM. Any comments appreciated


    Thanks

  2. Remove Advertisements
    ClubWRX.net
    Advertisements
     

  3. #2
    Registered User 06PearlWRX's Avatar
    Join Date
    Dec 2006
    Location
    SoCal
    Posts
    843
    so your hitting below your target boost?
    "90 miles an hour through trees sideways is pretty damn scary" ~Ken Block

  4. #3
    Banned
    Join Date
    Jun 2007
    Location
    Great Salt City of Utah
    Posts
    0
    Sounds normal to me. Don't adjust anything. If you want to see more boost in lower gears get a protune.

  5. #4
    Registered User 06PearlWRX's Avatar
    Join Date
    Dec 2006
    Location
    SoCal
    Posts
    843
    +1. better than boost spike. protune for next mod?
    "90 miles an hour through trees sideways is pretty damn scary" ~Ken Block

  6. #5
    Registered User Buzz's Avatar
    Join Date
    Feb 2007
    Location
    rochester
    Posts
    283

    Yep

    Im pretty sure thats normal. I read .. (I think in the map notes) the boost drops off after 5200 rpm because it saves the turbo. Your running it much harder now and cobb just wants its customers to be happy withouy breaking anything. Its been a while cuz im in Iraq, but thats how my car operated.


    06TR, COBB stage 2.

  7. #6
    Registered User Feezor's Avatar
    Join Date
    Nov 2006
    Location
    Ca
    Posts
    438
    ok cool thanks for the info. I just thought I would hit full boost in 3rd gear also. Protune is my next thing I am going to do after I get an IC and a gearset hopefully PPG's

  8. #7
    Registered User 07wrx4life's Avatar
    Join Date
    Jul 2007
    Location
    Bay Area, Cali
    Posts
    314
    Quote Originally Posted by Feezor View Post
    ok cool thanks for the info. I just thought I would hit full boost in 3rd gear also. Protune is my next thing I am going to do after I get an IC and a gearset hopefully PPG's
    check out the link below it shows how the power band hits strong in low rpms but then tapers off near the end. like stated above thats how cobb saves everyones engines by cutting off the boost in high rpms. it all sounds normal to me.
    07 WRX TR
    | APS CAI | APS TMIC | SPT Short Throw Shifter | SRs 3" DP + Greedy EVO 2 CB | Blouch DOM 3.0R | Deatchwerks 750's | Walbro FP | Perrin Turbo Inlet | Perrin Up Pipe | Perrin EBCS | Prodrive Springs | 1-4 Helical PPG's | Pro Tuned by Mike @ GSTMotorsports 319 whp / 317 wtq @ 20 PSI |

  9. #8
    "Supreme Subaphile Extraordinairre" ninefourteener's Avatar
    Join Date
    Mar 2006
    Location
    SLC area
    Posts
    2,190
    drop a bottle of octane booster in it... you may just have a tank of bad gas/.... your readings aren't that far off.
    2006 Subaru WRX-Thread: http://www.clubwrx.net/forums/engine-modifications/165158-ninfourteeners-progress-thread-pics.html
    1978 Subaru BRAT-Thread: http://www.clubwrx.net/forums/engine...ss-thread.html
    2007 Subaru B9Tribeca Ltd (PSM)........1994 Subaru SVX LSi(SOLD)
    WRX 12 sec drag (vs. late model Camaro SS):http://www.youtube.com/watch?v=lw0vWdD2cjU
    WRX track racing (catching a stg.2 WRX): http://www.youtube.com/watch?v=mELeSD1Mi08
    Co-Founder/retired Admin-www.slcsubaru.com

  10. #9
    Registered User Micah's Avatar
    Join Date
    Oct 2005
    Location
    Ocean Grove, NJ
    Posts
    4,142
    Quote Originally Posted by ninefourteener View Post
    drop a bottle of octane booster in it... you may just have a tank of bad gas/.... your readings aren't that far off.
    -1 - do not bother with octane booster, the stuff is a waste of money. Google for it if you don't believe me.

    Find a place that sells race fuel and add a gallon or two of higher octane fuel if you want to raise the octane rating.
    Torch Red 2002 Chevrolet Corvette Z06 46k mi.
    Black 2002 Subaru Impreza WRX 6-speed 94k mi. my mod list
    10/08/2006 - 14.089@103.01 (5-speed with well worn clutch, no launch)
    "Six stars gleaming, five speeds breaking, four tires chirping, three differentials working, two liters screaming, one turbo boosting... it's what makes a Subaru all-wheel-drive, all we'll drive."
    for Bugeye owners my BOV thread Service Manuals

  11. #10
    "Supreme Subaphile Extraordinairre" ninefourteener's Avatar
    Join Date
    Mar 2006
    Location
    SLC area
    Posts
    2,190
    ^^^^ At low elevations...... your right.... octane booster is almost useless.

    At high elevations... it does make a difference.... I use it al th etime because of the crappy air in utah and availability of only 91 octane.

    Sea foam works well too....... just trying save you a little cash.
    2006 Subaru WRX-Thread: http://www.clubwrx.net/forums/showthread.php?t=165158
    1978 Subaru BRAT-Thread: http://www.clubwrx.net/forums/engine...ss-thread.html
    2007 Subaru B9Tribeca Ltd (PSM)........1994 Subaru SVX LSi(SOLD)
    WRX 12 sec drag (vs. late model Camaro SS):http://www.youtube.com/watch?v=lw0vWdD2cjU
    WRX track racing (catching a stg.2 WRX): http://www.youtube.com/watch?v=mELeSD1Mi08
    Co-Founder/retired Admin-www.slcsubaru.com

  12. #11
    Registered User Feezor's Avatar
    Join Date
    Nov 2006
    Location
    Ca
    Posts
    438
    Thanks for all the input. I have also herd about octane booster being bad for your car not only a waste of money. Thanks for all the help

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself. We strongly suggest that you stay away from using aol, yahoo, msn, and hotmail accounts. Sometimes the mail server blocks the emails from our server. As a result you will not receive any notifications including the confirmation email.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •