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The mkiv Supra Owners Club

EBC installed and sounds like boost leak


Chris and Alana

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Hi guy's, I recently installed a blitz DSBC spec R which seems to work fine. When set to off it gives me just under 1bar boost, I have the other 4 settings set between 1bar upto1.2bar. When I have it turned off the car sounds fine, pulls a little slower than when the vsv was controlling the wastegate but I figured that’s because the wastegate will be constantly open when in the off position. Anyway, when I turn the boost controller onto any of the settings and floor it, it sounds like there is a boost leak coming from around the front drivers side area (the solenoid is also located in this area). Is this normal? The EBC will still increase boost up to 1.2bar fine but I have been worried as if there is a boost leak the turbo's will be working harder to create and maintain the boost wont they? Another thing I was wondering is if the HKS SSQV I have installed would interfere with EBC as it reacts on pressure difference (as far as I know) and the Blitz EBC pulsates through both solenoids so could it cause the dump valve to open and close constantly while boost is climbing? I have checked all the intercooler connections and made sure all clips are tight. I am quite sure that it is not a hose problem. Ay ideas?

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bringing this back up :) I took the solenoid apart today and all looks fine (no splits etc) I also checked as many vacuum hoses as I could see and again everything looks fine. Do the solenoids expell excess pressure at all? I cant seem to find where this noise is coming from but I am certain I have a boost leak of some sort as my boost level's (measured from the EBC and a MBC) seem to be constantly getting lower and the noise is getting louder, the car also doesnt feel as though it's pulling as well as it used to :( god damn boost problems:angry:

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