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93civicvx · 05-21-2011, 08:53 PM

I received my 2nd NEW O2 sensor last week...

The 1st was the Walker brand, which behaved no differently than the malfunctioning O2 that was in the car when I got it.
This 2nd one is a Denso and it APPEARS to be working properly !! Instead of the distinct - ruff running, bucking, sputtering and basic crappy performance at ANY speed in ANY gear, the car runs "smooth" albeit the feeling of mushiness when trying to ecomod it ( mushiness is the best term I can use to describe how it runs, I assume, in Lean burn mode ). When getting on it from a stand still ( pedal to the floor ! ) it took off and pulled strong throughout the gears ( no mushiness ) - despite my cringing at the amount of fuel I was wasting ! LOL This was the method I used to determine between 8v vs 16 valve performance...

I received my MPGuino back from repairs about a week before the 2nd O2 install. Out of the box, the MPGuino was within 1 MPH in accuracy as referenced to my cars speedo speed wise at any speed and also within about 1 mile as referenced to my odometer distance wise. The MPG was high and so made 2 adjustments to narrow it in... It isn't dialed in perfect yet, but irregardless, it is ready to evaluate the 2nd O2...

During the week on my normal commute to work, I collected MPG data numerous times on the same stretch of road at given speeds ( 45, 50, 55 & 60 ) in 5th gear so as to have a reference point when trying out the newest O2. At these speeds I was careful to make sure the speed was very stable for a bit and that the MPG was locked on - not increasing or decreasing...

My observed PRELIMINARY gain ranged from about 10 - 18 MPG !!!!
Now, as excited as I am about this, I will await the raw numbers when I fill up at my next tank ( keeping in mind that the newest O2 was installed with about 140 miles on the clock, as well as run at least 1 or 2 more tanks thru it ). Look at my garage to see how my gas mileage has been for my 14 previous tanks... I believe I have a good reference base to measure against.

I will keep everyone posted as well as let you know the part # and place of purchase and who to talk to once I confirm satisfactory results...

05-21-2011, 08:53 PM	#12 (permalink)
93civicvx EcoModding Lurker Join Date: Dec 2010 Location: Brevard, FL Posts: 39 93civicvx - '93 Honda Civic VX Team Honda 90 day: 52.33 mpg (US) Thanks: 2 Thanked 6 Times in 4 Posts	I received my 2nd NEW O2 sensor last week... The 1st was the Walker brand, which behaved no differently than the malfunctioning O2 that was in the car when I got it. This 2nd one is a Denso and it APPEARS to be working properly !! Instead of the distinct - ruff running, bucking, sputtering and basic crappy performance at ANY speed in ANY gear, the car runs "smooth" albeit the feeling of mushiness when trying to ecomod it ( mushiness is the best term I can use to describe how it runs, I assume, in Lean burn mode ). When getting on it from a stand still ( pedal to the floor ! ) it took off and pulled strong throughout the gears ( no mushiness ) - despite my cringing at the amount of fuel I was wasting ! LOL This was the method I used to determine between 8v vs 16 valve performance... I received my MPGuino back from repairs about a week before the 2nd O2 install. Out of the box, the MPGuino was within 1 MPH in accuracy as referenced to my cars speedo speed wise at any speed and also within about 1 mile as referenced to my odometer distance wise. The MPG was high and so made 2 adjustments to narrow it in... It isn't dialed in perfect yet, but irregardless, it is ready to evaluate the 2nd O2... During the week on my normal commute to work, I collected MPG data numerous times on the same stretch of road at given speeds ( 45, 50, 55 & 60 ) in 5th gear so as to have a reference point when trying out the newest O2. At these speeds I was careful to make sure the speed was very stable for a bit and that the MPG was locked on - not increasing or decreasing... My observed PRELIMINARY gain ranged from about 10 - 18 MPG !!!! Now, as excited as I am about this, I will await the raw numbers when I fill up at my next tank ( keeping in mind that the newest O2 was installed with about 140 miles on the clock, as well as run at least 1 or 2 more tanks thru it ). Look at my garage to see how my gas mileage has been for my 14 previous tanks... I believe I have a good reference base to measure against. I will keep everyone posted as well as let you know the part # and place of purchase and who to talk to once I confirm satisfactory results...