EFI Systems
#21
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Agree that above idle closed loop is fine (I have mine open loop until 1500rpm - NA motor though). I have my idle well tuned 1500 and below. Also, if I do happen to kill an o2 I sort of have a limp home mode. Unlike ez though, I've had good luck with the innovative extender (I lost my fair share of o2's prior to using). I guess it probably comes down to the exhaust system, how much water your introducing into the stream, location, etc.
#22
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I have 5 inch exhaust on my blower motors and you fight sucking back outside air at idle giving you false lean readings on the o2s. If your putting the o2s before the turbos the problem may not exist. I run the Holley Dominators systems with the new v4 software and it works great in closed loop above idle. Also the NTK o2 sensors are more durable than the bosch imo.
#23
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I've seen the plates under the turbos where they screw in the 02, what causes them to crash at that location. Should be little to no water there? Are they too close to exhaust for fuel condensation to burn off?
#24
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After playing with my wideband and seeing how much the mixture varies just from the time of day I'd go closed loop if that's an option.
Super Chevy's list.
http://www.superchevy.com/how-to/eng...-market-today/
Super Chevy's list.
http://www.superchevy.com/how-to/eng...-market-today/
#25
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I didn't have much time on the throttle and they were short experiments, but it richened up more than a half a point around sundown. it seems like it would lean out with the air more dense, so I'm calling it inconclusive until I have a chance to repeat it. Hopefully this weekend.
#26
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snake oil when comes to a boat setup, if you are getting ANY water near the 02 this is NOT going to help, we tried all kinds of stuff like this a while back, only cure was to move to a header tube which worked fine(how accurate no way to tell, but seemed fine) as far as the EFI really need to run with the 02 or at least do ALL tuning with one