oxygen sensor spacer

[nfren]

if I put a spacer on the oxygen sensor, where the oxygen sensor sticks out the exhaust pipe more than normal, would that make the engine run leaner?

[Rang3find3r]

wat

[AtomicFire]

It depends. Most cars have 2 oxygen sensors. One is before the catalytic converter, and the other is behind it. That way the computer can monitor and see if your cats are working right. However, the ECU typically only uses the sensor before the cat to determine ratios in closed-loop fueling. The sensor after the cat is used purely to determine the efficiency of the catalytic converter. This is the one that you usually want to fool. On most cars, using a spacer on this sensor will do nothing to change the A/F of the engine, and can effectively "trick" the ecu into thinking the cats are working fine, if you have in fact removed them or installed a high-flow model.

Some cars, like the STi, have some sort of voodoo magic with the second O2 sensor. Its not "required" and none of the maps reference A/F radio from it, but if you remove it or stick in a spacer the ECU gets confused and runs the car super-duper rich.

[Bluesultan]

why would you want to run your car leaner, for fuel savings?

[Bernie Mac]

05 Accord Hybrid
HHO injection 265 hp 53.5 mpg

care to explain?

[jayjaya29]

You mean something like this?



This is used to space the O2 farther out from the exhaust gas stream so the correct readings are taken within an aftermarket exhaust setup. I call it the ghetto sim, works amazingly well.

[nfren]

i bought an accord hybrid a couple weeks back, crashed. since then it is restored back to normal.

then i saw this stuff i thought was a gimmick online about using electrolysis to produce hydrogen and utilizing a hose which goes into the air intake ( very basic description ). Its a simple device to produce, using a 3 inch PVC pipe and two end caps, two stainless electrodes and a bubbler tank, a hose going from the top of the bubbler tank to the air intake. the so called HHO gas gets pumped into the intake manifold and is mixed with the air to allow the gasoline to burn much cleaner.

heres a pic of a torch created that uses this principle


the left most tank has the water mixed with NaOH or KOH, and the two electrodes, the gas from that tank escapes into the bubbler tank ( middle ) where i the HHO gas flows to the top, and the vacuum from the engine sucks it in to the intake manifold where it is introduced to the gas / air mixture in the cylinder.

i thought all this crap was a gimmick, but i tested it using a high output DC power supply, and i actually lighted a torch i took off my acetalyne tank, and its a weird flame to say the least.



Since my testing on this vehicle, ive been averaging between 45-50 mpg, whereas before i was getting 33-35 mpg

if i could make it run leaner i could expect more fuel economy, also i would sacrifice some horsepower.

with southwest florida gas prices going up to 3.80 now I would love to drive a car with 255 hp and still get high mileage

I used to drive a Prius, a great car i get above 50 mpg consistently, and i do highway driving.

[DopefishLives]

In the Audi circle, people use spark plug defoulers in order to trick the ECU when running a test pipe in place of the catalytic converter.

...this is a bad idea, leaning out the detected readings without proper timing adjustments and basically outright lying the ECU will harm performance more than help, and this remains true of fuel economy as you'll most likely force the ECU into a different timing table to compensate and in turn loose efficiency. You'll also slowly destroy your rings, causing premature engine failure. This is a idea.

Edit: This will actually give you the opposite effect you are after as it will think the car is running lean due to detecting less fuel and will in turn attempt to richen the mixture. I cannot reiterate enough what a idea this is.

Do it though, for the lulz.

Edit 2: Is this a Touareg dupe?

[Rang3find3r]

Originally Posted by nfren

i bought an accord hybrid a couple weeks back, crashed. since then it is restored back to normal.

then i saw this stuff i thought was a gimmick online about using electrolysis to produce hydrogen and utilizing a hose which goes into the air intake ( very basic description ). Its a simple device to produce, using a 3 inch PVC pipe and two end caps, two stainless electrodes and a bubbler tank, a hose going from the top of the bubbler tank to the air intake. the so called HHO gas gets pumped into the intake manifold and is mixed with the air to allow the gasoline to burn much cleaner.

heres a pic of a torch created that uses this principle


the left most tank has the water mixed with NaOH or KOH, and the two electrodes, the gas from that tank escapes into the bubbler tank ( middle ) where i the HHO gas flows to the top, and the vacuum from the engine sucks it in to the intake manifold where it is introduced to the gas / air mixture in the cylinder.

i thought all this crap was a gimmick, but i tested it using a high output DC power supply, and i actually lighted a torch i took off my acetalyne tank, and its a weird flame to say the least.



Since my testing on this vehicle, ive been averaging between 45-50 mpg, whereas before i was getting 33-35 mpg

if i could make it run leaner i could expect more fuel economy, also i would sacrifice some horsepower.

with southwest florida gas prices going up to 3.80 now I would love to drive a car with 255 hp and still get high mileage

I used to drive a Prius, a great car i get above 50 mpg consistently, and i do highway driving.

wow.. you're retarded. no explanation necessary. just wow.

[Lurker]

Originally Posted by jayjaya29

You mean something like this?



This is used to space the O2 farther out from the exhaust gas stream so the correct readings are taken within an aftermarket exhaust setup. I call it the ghetto sim, works amazingly well.

That is used when you have no catalytic converter anymore. Different purpose. It skews the readings a bit so the computer thinks your catalytic is working when you have none. Cheap mod, about 15 bucks and supposedly works. Id still rather build an electronic o2 sim.

[nfren]

o2 sensor works with resistance right?

so if i figure out the range the ECU works in, i could get a variable resistor and mess around?

[DopefishLives]

Originally Posted by nfren

o2 sensor works with resistance right?

so if i figure out the range the ECU works in, i could get a variable resistor and mess around?

Yes they do and no you cannot.

What you are looking to involves modifying the output from the MAF but that is still a ghetto way to perform your intentions of which in their own right are fucking stupid. Messing with the O2 sensors will do far more harm than good.

[Rang3find3r]

Originally Posted by nfren

o2 sensor works with resistance right?

so if i figure out the range the ECU works in, i could get a variable resistor and mess around?

you don't have any idea what you're doing, at all. stop now, before you end up destroying your engine

[AtomicFire]

Originally Posted by nfren

i bought an accord hybrid a couple weeks back, crashed. since then it is restored back to normal.

then i saw this stuff i thought was a gimmick online about using electrolysis to produce hydrogen and utilizing a hose which goes into the air intake ( very basic description ). Its a simple device to produce, using a 3 inch PVC pipe and two end caps, two stainless electrodes and a bubbler tank, a hose going from the top of the bubbler tank to the air intake. the so called HHO gas gets pumped into the intake manifold and is mixed with the air to allow the gasoline to burn much cleaner.

heres a pic of a torch created that uses this principle


the left most tank has the water mixed with NaOH or KOH, and the two electrodes, the gas from that tank escapes into the bubbler tank ( middle ) where i the HHO gas flows to the top, and the vacuum from the engine sucks it in to the intake manifold where it is introduced to the gas / air mixture in the cylinder.

i thought all this crap was a gimmick, but i tested it using a high output DC power supply, and i actually lighted a torch i took off my acetalyne tank, and its a weird flame to say the least.



Since my testing on this vehicle, ive been averaging between 45-50 mpg, whereas before i was getting 33-35 mpg

if i could make it run leaner i could expect more fuel economy, also i would sacrifice some horsepower.

with southwest florida gas prices going up to 3.80 now I would love to drive a car with 255 hp and still get high mileage

I used to drive a Prius, a great car i get above 50 mpg consistently, and i do highway driving.

Did you know the energy required to separate the gases >> the energy "gained" by plumbing the gases back into the engine? If this really were a viable option, the auto industry would have figured it out years ago. Do you have any idea how much gas and air a modern car engine needs to be able to pull a car, let alone idle? A setup like that is, at best, going to do very little to help the efficiency of the vehicle.

EDIT:

I just read this link on similar "technology":
http://www.s10forum.com/forum/f107/h...esults-345731/

I stopped reading as soon as he said Hydrogen will explode without oxygen. This is killing my brain cells.

[Rancidpunk666]

only use it for downstream sensors. use it when removing cats and adding a header(s)