Quote:
Originally Posted by Myrunr2010
Before anyone ask, yes im running the wideband pre-turbo. Instructions for it said after the turbo but before the cat...which I literally can't do. Given that im running a very low amount of boost in the grand scheme of people boosting vehicles, I don't think it'll be a huge issue.
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Aside from heat (which is an issue pre-turbo), the actual reason to avoid pre-turbo wide-band O2 sensors is accuracy. The AF ratio sensing is all relative to atmospheric pressure, and if there is any significant pressure on the exhaust side of the sensor, it will read incorrectly.
Wideband back pressure information | CPG Nation Forum
Important Tips to Get the Maximum Life Out of your O2 Sensor - Innovate Blog
No use in spending the money on a wideband then ruining it quickly while getting bad data from it...
Also, regarding the turbo oil-drain. You will either need to run the scavange pump post-engine shutdown or run a small catch reservoir to keep from pushing oil past the turbo oil seals. Watch for excessive oil out the exhaust from the setup you are currently planning...
-Charlie
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