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Still Have Excessive Boost Problem


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#21 leurven

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Posted 06 September 2006 - 03:07 AM

QUOTE(rodrigo @ Sep 5 2006, 11:01 PM) View Post
13g.


Haha awesome. Maybe!
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#22 FluidGroove

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Posted 06 September 2006 - 04:51 AM

loosen/unscrew the wastegate?
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#23 Johann

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Posted 06 September 2006 - 11:22 AM

QUOTE(leurven @ Sep 6 2006, 03:47 AM) View Post
BCS replacement has not fixed the problem? Any other ideas guys?


Check all the hoses and clamps. If you are done withat that do it a second time.
Appears as if boost is blowing by somewhere.

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#24 Gioseppe

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Posted 07 September 2006 - 03:31 AM

hook the wastegate up directly to the intake....
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#25 leurven

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Posted 07 September 2006 - 05:33 AM

I think this is how DougK and I diagnosed that the BCS was causing a problem. Turns out the BCS replacement still hasn't fixed it.
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#26 leurven

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Posted 08 September 2006 - 12:25 AM

Ok new problem. CBV now flutters when letting air through it. Kind of like those BOV that are designed to flutter when letting air out. Any ideas?
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#27 ovlovtech

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Posted 08 September 2006 - 09:31 PM

Would it be worthwhile to put a mity vac on the hose to the waste gate to see if it holds vacuum? That might let you know if there is a hole in it. Im willing to help you out if you cannot figure it out also. I live fairly close to you. Feel free to pm me.

#28 galion

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Posted 12 September 2006 - 10:40 PM

I had a similar issue, even bent my rods due to that uncontrollable overboost.
Changed the BCS twice, and NOTHING, changed all hoses, and NOTHING, I was going to order a new wastegate actuator, until I decided to try with a MBC.
I dont know why(????), but ALL my boost problems were fixed after I install a Turbo XS MBC.

Good luck

Edited by galion, 12 September 2006 - 10:52 PM.


#29 leurven

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Posted 13 September 2006 - 02:45 AM

QUOTE(galion @ Sep 12 2006, 06:40 PM) View Post
I had a similar issue, even bent my rods due to that uncontrollable overboost.
Changed the BCS twice, and NOTHING, changed all hoses, and NOTHING, I was going to order a new wastegate actuator, until I decided to try with a MBC.
I dont know why(????), but ALL my boost problems were fixed after I install a Turbo XS MBC.

Good luck


Unfortunately with ME7 engine management you can't reliably run an MBC. I wondering if something is throwing the BCS off.
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#30 galion

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Posted 13 September 2006 - 03:42 PM

QUOTE(leurven @ Sep 13 2006, 02:45 AM) View Post
I wondering if something is throwing the BCS off.



I absolutely could not get any BCS to work right on my car, I am sure it had something to do with the ECU not controlling the BCS.

#31 98BRICK

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Posted 15 September 2006 - 05:31 PM

have u tinkered with ur wastegate actuator rod, lately? try lengthening it back to stock?

check ur codes...p0243? maybe?
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#32 leurven

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Posted 16 September 2006 - 02:23 AM

QUOTE(98BRICK @ Sep 15 2006, 01:31 PM) View Post
have u tinkered with ur wastegate actuator rod, lately? try lengthening it back to stock?

check ur codes...p0243? maybe?


Does the wastegate rod get shorter then? I don't think it was ever shortened.
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#33 leurven

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Posted 16 September 2006 - 11:02 PM

Turns out that when DougK played around with my BCS and vacuum lines he reinstalled them incorrectly. With the new BCS and the lines now corrected I can make boost to 17psi and the car isn't boosting too quickly or too high.

I am still getting fluttery boost at the high PSI though which I am thinking could be related to bad IC piping for the throttle body or a problem with a vacuum line somewhere.
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#34 MadeInJapan

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Posted 17 September 2006 - 02:37 AM

Glad you found what was wrong. I'm sure you feel a whole lot better now.
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#35 leurven

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Posted 17 September 2006 - 06:11 AM

QUOTE(MadeInJapan @ Sep 16 2006, 10:37 PM) View Post
Glad you found what was wrong. I'm sure you feel a whole lot better now.


Certainly a relief. Now the car drives normally again. It sucked to drive before - so much loss of power.
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