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keymaster

15+ Year Contributor
487
11
Sep 18, 2004
Ranger, Texas
Ok, so I decided to do a couple logging pulls tonite since my car's been acting weird. I just installed a 14b a couple weeks ago, and it pulls nice and hard, but it isn't spooling until 3500 RPM's. I know, boost leak check. Tried to do it last weekend, and couldn't even pressurize the whole system. I heard a massive hissing sound from the turbo itself. Took off J-pipe, and covered the oulet on the compressor, still that hissing noise from the turbo. What could this possibly be? Also, on my pulls tonite, I got a 0.00v from my O2 sensor. What the hell?! Also, I'm only getting 14 degrees of timing by redline on 15 psi. Figured I'm lean, but the stft doesn't move past zero. Can anyone give me some idea of where to start here? I'm really desperate. Thanks in advance.
 
As far as the turbo leak, pull the compressor housing off and make sure the oring is still there to seal the housing to the backing plate. I saw the same problem on a friends car and when we pulled the housing off, the oring was in 2 pieces.

As far as the o2 sensor, how old is it It might be dying.

The timing is probably directly related to the turbo problem and the dead o2 sensor. If the leak on the turbo is that bad, it is being overworked, blowing hot air, and causing some knock.
 
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