Intake pipe = boost creep
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Would a EBC fix the issues? I really don't wanna have to pull the turbo again, I have taken the turbo off my car too many times to count
I hear what you are saying about removing the turbo. I've been procrastinating about the same task myself eventhough pulling only the turbine housing is not as painful as pulling the complete turbo.
You've eliminated the WGA as a suspect by swapping to the IX actuator. You've eliminated the MBC as a suspect by running a hose straight from the compressor nipple to the WGA. You've tried adjusting the wastegate actuator rod to no avail. We know that it is not a too small merge hole because you are not running a Megan O2 housing but rather the better flowing O2 dump. And finally you swapped back to the stock intake hose.
As you metioned, perhaps a good EBC, or a well setup ECU controlled boost circuit with the GM BCS and the JDM MAP sensor might do the trick. Other than that, if you want to stick with an MBC then you'll probably have to grind on the turbine housing's bypass port.
You've eliminated the WGA as a suspect by swapping to the IX actuator. You've eliminated the MBC as a suspect by running a hose straight from the compressor nipple to the WGA. You've tried adjusting the wastegate actuator rod to no avail. We know that it is not a too small merge hole because you are not running a Megan O2 housing but rather the better flowing O2 dump. And finally you swapped back to the stock intake hose.
As you metioned, perhaps a good EBC, or a well setup ECU controlled boost circuit with the GM BCS and the JDM MAP sensor might do the trick. Other than that, if you want to stick with an MBC then you'll probably have to grind on the turbine housing's bypass port.
Last edited by sparky; Feb 2, 2009 at 09:45 PM.
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From: Cleveland, TN
I hear what you are saying about removing the turbo. I've been procrastinating about the same task myself eventhough pulling only the turbine housing is not as painful as pulling the complete turbo.
You've eliminated the WGA as a suspect by swapping to the IX actuator. You've eliminated the MBC as a suspect by running a hose straight from the compressor nipple to the WGA. You've tried adjusting the wastegate actuator rod to no avail. We know that it is not a too small merge hole because you are not running a Megan O2 housing but rather the better flowing O2 dump. And finally you swapped back to the stock intake hose.
A good EBC, or a well setup ECU controlled boost circuit with the GM BCS and the JDM MAP sensor might do the trick. Other than that, if you want to stick with an MBC then you'll probably have to grind on the turbine housing's bypass port.
You've eliminated the WGA as a suspect by swapping to the IX actuator. You've eliminated the MBC as a suspect by running a hose straight from the compressor nipple to the WGA. You've tried adjusting the wastegate actuator rod to no avail. We know that it is not a too small merge hole because you are not running a Megan O2 housing but rather the better flowing O2 dump. And finally you swapped back to the stock intake hose.
A good EBC, or a well setup ECU controlled boost circuit with the GM BCS and the JDM MAP sensor might do the trick. Other than that, if you want to stick with an MBC then you'll probably have to grind on the turbine housing's bypass port.
sounds crazy, but your BC might be on teh way out... had this pappen to us before.. it semed like it was controlling boost... i recommend you try adjusting to a little lower boost setting and a little higher... if you have the same results, the ball in your BC is not working correctly..
thats off of my experience based on the above posts
thats off of my experience based on the above posts
The modified ECU based boost control setup as perfected by Bryan(AKA, Razorlab) at GST, is what I would rely on to control boost if I lived in the U.S. As far as EBC's are concerned I happen to like the HKS EVC-6, however this is a more expensive option and not so simple to setup perfectly. Furthermore, I am not so sure that it is any better than Bryan's slick and relatively inexpensive approach to boost control.
Last edited by sparky; Feb 2, 2009 at 10:22 PM.
sounds crazy, but your BC might be on teh way out... had this pappen to us before.. it semed like it was controlling boost... i recommend you try adjusting to a little lower boost setting and a little higher... if you have the same results, the ball in your BC is not working correctly..thats off of my experience based on the above posts
Last edited by sparky; Feb 2, 2009 at 10:12 PM.
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I had this same problem with my gsx, but found out that it was only vac line on the turbo popped off. I know you probably already double checked the lines but check again and make sure all the lines on the turbo side and wastegate side are on right, and there isnt any cracked lines... etc.
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I had this same problem with my gsx, but found out that it was only vac line on the turbo popped off. I know you probably already double checked the lines but check again and make sure all the lines on the turbo side and wastegate side are on right, and there isnt any cracked lines... etc.
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I know the EBC is more expensive but if I creep for any reason the EBC makes the neccesary adjustments. See if you borrow a friends EBC before purchasing one and set it at the lowest setting
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