Join Date: Apr 2007
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Well I didn't have a boost gauge installed prior to the tune so there is no way of knowing what my psi was at. I installed the boost and egt gauge at the same time we did the up pipe and TBE. we took a look at the waste gate and it is operating properly. My tuner thinks it may be a faulty BOV and since it is still the stock bypass valve you wouldn't be able to hear anything if its leaking out boost. The only other thing I can think of (if it isn't the BOV) is a bad turbo. Like I said, it still runs fine and the TBE made an increase of 15 whp, the only issue is not being able to get the actual boost over 8 psi, even though the ecu is tuned for higher. According to Steve, my tuner, a stage 2 WRX should be around the 250 to 260 torque range with approx 235-240 whp. Right now mine dynos at 200 whp and 186 torque but thats only at 8-9 psi.
So anyway right now I am looking at the Perrin Bypass valve, anyone have any experience with this.
Sounds like you should find a new tuner.He should know how to trouble shoot these kinds of problems,especially if nothing has been done to the car and it was running fine before the tune.
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