Meangreen14
Expert Class
Posts: 343
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posted January 17, 2011 01:28 PM
is this exhaust too short? and is o2 sensor to close
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PCV, quick shifter, stock gearing,
fly's out, custom garrett gt28 stage1 turbo, JE pistons, 625cc inj, MTC lock up clutch,1:1 fuel pressure regulator...
  
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Rook
Pro
Posts: 1125
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posted January 17, 2011 01:46 PM
Really cool setup you have. I don't know anything about turbo but I have an o2 sensor for my Autotune module...so take my comments FWIW.
o2 sensor too close to the engine, you mean?
That is a concern with a 4-2-1 becaus eif you go too close to the engine you will be sniffing only 2 pipes when there are 4 exhaust outlets. Have been told it really doesn't matter. Personally, I am glad I have my o2 sensor where all 4 pipes come together and I would prefer to have it positioned as far back as possible to ensure that a good sampling of exhaust mixtur from all cylinders is accessible. I don't think that is an issue with your set up but like a said----FWIW.
pipe too short?
Looks like you are getting some fairing meltage in pic #2. Already the fairing has been cut. I can see why you would not want to just cut that piece out. The lower might get floppy without the support of the whole piece.
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Shane661
Needs a life
Posts: 11494
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posted January 17, 2011 01:47 PM
At low rpm you will get a lot of reversion at the sensor, for sure.
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Meangreen14
Expert Class
Posts: 343
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posted January 17, 2011 02:51 PM
i already went thru two o2 sensors on pump gas, i ordered some 3'' stainless steel bends and ill try to extend some and move sensor down some
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PCV, quick shifter, stock gearing,
fly's out, custom garrett gt28 stage1 turbo, JE pistons, 625cc inj, MTC lock up clutch,1:1 fuel pressure regulator...
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oldkawboy
Needs a job
Posts: 2125
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posted January 17, 2011 03:14 PM
This is mine on my ZRX, I had it plugged during this photo. I compared the a/f readings on my gauge to the sniffer on a DJ250 and the were comparable.
Mines worked fine for 5 years.
Dan
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Meangreen14
Expert Class
Posts: 343
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posted January 17, 2011 03:38 PM
ok cool ill move mine away from exhaust fort 2-3 inches when i extend pipe
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PCV, quick shifter, stock gearing,
fly's out, custom garrett gt28 stage1 turbo, JE pistons, 625cc inj, MTC lock up clutch,1:1 fuel pressure regulator...
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gilberjj
Needs a job
Friend of Fast
Posts: 3196
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posted January 17, 2011 04:17 PM
Like I said before, I don't think it's the fuel killing those sensors, I think it's the heat. When I got my aem Wideband, the instructions said to place the sensor 24-36 inches down from the turbo. That's simply not possible on your setup, but move it asfar downstream as possible. Pump shouldnt kill those sensors..... Race gas will though!
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Meangreen14
Expert Class
Posts: 343
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posted January 17, 2011 04:57 PM
Thanks gilberjj will do
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PCV, quick shifter, stock gearing,
fly's out, custom garrett gt28 stage1 turbo, JE pistons, 625cc inj, MTC lock up clutch,1:1 fuel pressure regulator...
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