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EFIE install and adjustments
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crazeehorse Offline
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Post: #1
EFIE install and adjustments
I purchased a single EFIE circuit board on 10/31/08. I have a 2008 Hyundai Sonata with a 2.4 4 cyl engine. I located the front O2 on the tail pipe and found that it had 4 wires. (2 white, 1 grey and 1 black). I selected the black wire as the 02 sensor wire. After cutting the wire, I soldered a green connecting wire to the o2 end.
I have a red wire connecting soldered to the computer end.

The EFIE green wire is connected to the Green extension. The white EFIE wire is connected to the Red extension. EFIE red wire to Positive terminal of the device, EFIE black wire to device negative terminal.

Car was warmed up to normal operating temp. Following measurements.
o2 (Black test point) to ground 755 mv
comp(Red test point) to ground 782 mv
Black & red points connected 041 mv

In your post to altaber@eztissue.biz Mike said

"When you test between the black and the red test ports, you are not reading what the computer sees. You are reading the amount the EFIE is increasing the voltage that is coming from the oxygen sensor. You will find that this reading is stable, ie doesn't fluctuate around. It will rise until it reaches it's set voltage"

The EFIE voltage will not go about about 048 mv no matter how far clockwise I turn the screw. I will go down to about 015 mv turning it counter clockwise. It almost feels as if the threads of the adjusting screw is stripped.

Help!!
crazeehorse


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2008 Hyundai Sonata
4 cylinder; Automatic Trans
ZeroFossilFuel cell clone
11-12-2008 06:20 AM
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crazeehorse Offline
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Post: #2
RE: EFIE install and adjustments
It also fluctuates about 10-15 mv
cz

2008 Hyundai Sonata
4 cylinder; Automatic Trans
ZeroFossilFuel cell clone
11-12-2008 06:22 AM
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crazeehorse Offline
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Post: #3
RE: EFIE install and adjustments
Well, color me stupid. If the ignition switch is on and the engine is NOT RUNNING then it can be adjusted very slowly. Initial setting for now will be 250 mv. I guess there just ain't no cure for stupid.

2008 Hyundai Sonata
4 cylinder; Automatic Trans
ZeroFossilFuel cell clone
11-12-2008 10:46 AM
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colchiro Offline
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Post: #4
RE: EFIE install and adjustments
Is there a cure for talking to yourself? Wink

Did you buy your board from Mike?

I have a number of concerns:
Did you confirm you have a compatible o2 sensor? An efie requires a narrow band sensor.

I'm familiar with Mike's wire colors, but not other brands:
crazeehorse Wrote:The EFIE green wire is connected to the Green extension. The white EFIE wire is connected to the Red extension. EFIE red wire to Positive terminal of the device, EFIE black wire to device negative terminal.
efie green to o2 sounds correct.
white efie (if from Mike) should go to ecu
efie red to switched +12
black to ground.

Rick

Links: Documents / Tuning for Mileage | Toyota Sensors | Autoshop Sensor Tutorials
11-12-2008 03:41 PM
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crazeehorse Offline
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Post: #5
RE: EFIE install and adjustments
I did buy it from Mike. Been doing some mileage tests. Use avg mpg on ScanGuageII
At 20 amps - 36.1 mpg
15 amps - 35.9 mpg
10 amps - 36.4 mpg

It appears the the less the volume of HHO the better milage. am I right in assuming that I need more voltage from the EFIE?

At my age (70), talking to myself is the least of my problems.
Not everything I have works and anything that does, HURTS.

2008 Hyundai Sonata
4 cylinder; Automatic Trans
ZeroFossilFuel cell clone
11-12-2008 04:11 PM
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crazeehorse Offline
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Post: #6
RE: EFIE install and adjustments
The o2 sensor is of the Narrow band zirconia type. For those that follow me, http://www.lambdasensor.com/main/mcolours.htm shows different sensors and the wire colors.

2008 Hyundai Sonata
4 cylinder; Automatic Trans
ZeroFossilFuel cell clone
11-12-2008 04:25 PM
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colchiro Offline
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Post: #7
RE: EFIE install and adjustments
re: talking to yourself, I meant you had 3 posts before I got here.Big Grin

To me they all look the same, i.e. highest to lowest are about .5 mpg apart so within a margin of error. I doubt you could check your mileage 3 times (without changing anything), and do better.

What was your mileage before you added a cell and efie?

What is your efie set at now?

I can associate with your last statement, (but am 15 years your junior).

Rick

Links: Documents / Tuning for Mileage | Toyota Sensors | Autoshop Sensor Tutorials
11-12-2008 04:27 PM
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colchiro Offline
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Post: #8
RE: EFIE install and adjustments
Sorry, forgot to address this:
crazyhorse Wrote:o2 (Black test point) to ground 755 mv
If wired properly, this is your o2 sensor output and with the engine running, should be a quickly changing signal between .1 and 1.0 vdc.

Did you connect to your o2 sensor under the hood by the sensor?

Rick

Links: Documents / Tuning for Mileage | Toyota Sensors | Autoshop Sensor Tutorials
11-12-2008 04:32 PM
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crazeehorse Offline
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Post: #9
RE: EFIE install and adjustments
Test Results for 2008 Hyundai Sonata

4 cylinder - 2.4 cc displacement.
Automatic transmission ( 4 speed )

Test Loop is 17.1 miles. A few hills but mostly level.
Speed was 48 mph by GPS and with cruise control.
ScanGuage II was used for average MPG. Calibration
is good.

Amps Avg MPG

Nov 12 2008 -- EFIE set for 250 mv
20 A 36.1
15 A 35.9
10 A 36.4

Nov 13 2008 -- EFIE set for 190 mv
10 A 37.5
15 A 37.2
20 A 37.1

EFIE set for 160 mv
10 A 37.3
20 A 36.5

EFIE set for 210 mv
10 A 36.9
20 A 36.9

NO HHO/No EFIE 37.9

Nov 14 2008

EFIE set for 230 mv
10 A 36.6
20 A 36.2

NO HHO/No EFIE 37.2

Nov 15 2008
EFIE set
285 mv 16.5 A 36.1
310 mv 25.0 A 36.2
240 mv 28.0 A 36.5
185 mv 28.0 A 37.2
180 mv 28.0 A 38.2

NO HHO/No EFIE 38.2 @ 48 mpg
38.5 @ 58 mpg

Nov 18 2008
EFIE set 185
10 A 34.3 @ 58 mph
No HHO / No EFIE 34.3 @ 58 mph
HHO / No EFIE variable speed 34.3

I tried to set the voltage on the EFIE with the
engine running but it would go all over the place
mostly lower...down to - volts. I set the EFIE
with the engine off but the ignition on.
Please give me your opinion of the above info.

thanks
crazeehorse

2008 Hyundai Sonata
4 cylinder; Automatic Trans
ZeroFossilFuel cell clone
11-18-2008 03:53 PM
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colchiro Offline
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Post: #10
RE: EFIE install and adjustments
You're wasting your time checking mileage if the efie isn't installed properly.

To measure your efie offset voltage, you set your meter to 2 vdc scale and insert your black meter in the efie black jack and the red in the red jack. I believe you're saying with your offset voltage is unstable, but only with the engine running. Correct?

Again, did you connect to your o2 sensor under the hood by the sensor so you are positive you have the wires connected as in this diagram?

[Image: EFIE_connections.jpg]

If properly wired you should see a quickly changing signal between .1 and 1.0 vdc from black efie jack to ground with the motor running.

Rick

Links: Documents / Tuning for Mileage | Toyota Sensors | Autoshop Sensor Tutorials
11-18-2008 04:14 PM
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