High Octane leaded - O2 sensor Q?
03-02-2005, 11:09 AM
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a bunch of us down here are trying the Denso's right now. I will report how they work shortly when I begin tuning on leaded race gas. However...I will likely be going to a speed density tune later.
03-03-2005, 08:05 AM
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Originally Posted by next
For those of you using high octane leaded fuel are you using aftermarket O2s?
03-03-2005, 09:00 AM
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Originally Posted by bickelfirebird
Yes, we run 125 octane and NGK/NTK O2 sensors, which we clean with methanol after each run.
03-03-2005, 09:43 AM
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Originally Posted by 93LS1RX7
Cleaning them with methanol after evry run, how long are they lasting? O2's are cheap and I would hate to have to replace tehm every month or 2.
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03-03-2005, 10:32 PM
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The Desnso's dont seem to work for crap. Doesnt seem like they heat well and are lazy to read. These are supposed to be direct replacement. Havent had a chance to look into this yet as I am still doing alot of other stuff. Plus we are doing a speed density tune on the car. I will report more later.
03-03-2005, 11:20 PM
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I was planning on going with the Denso after reading the article in GMHP but if no one else has info I might wait.
I had ran my stock ones, for over a year, after they met leaded race gas mix. I ran about 10 weekends with lead over the year or so, and they were actually fine til the car sat for long periods during my deployment.
$700 holy ****, I gripe about $170 w. shipping to hawaii for a set. Good God!
I had ran my stock ones, for over a year, after they met leaded race gas mix. I ran about 10 weekends with lead over the year or so, and they were actually fine til the car sat for long periods during my deployment.
$700 holy ****, I gripe about $170 w. shipping to hawaii for a set. Good God!
03-04-2005, 08:13 AM
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It may be due to running open headers right now with such a large cam. Im still checking stuff out. They really should work just fine. I mean...they are advertized as OEM direct fit replacements.
03-04-2005, 09:35 AM
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The info I ended up finding on an old GN thread was that those guys were going through 50 gals of fuel on a set of Denso O2s. Hope you get it figured out.
03-06-2005, 10:01 AM
#13
Eric. I have been running Denso's for a while. Still on 104 un-leaded, but no problems so far.
383 - I tried running open headers with my stock and Denso O2's. It really screwed things up. I "think" it was too much fresh air and than a mad dash of exhaust. Neither could handle the change. I added a billet muffer and no problem. I am switch to Eric's exhaust system - a 16" pipe. This should allow for the O2s to read the air correctly.
David
383 - I tried running open headers with my stock and Denso O2's. It really screwed things up. I "think" it was too much fresh air and than a mad dash of exhaust. Neither could handle the change. I added a billet muffer and no problem. I am switch to Eric's exhaust system - a 16" pipe. This should allow for the O2s to read the air correctly.
David
