UniChip-Any Good?

[Silverado1]

Came across this Article recently, but Brods. have anyone tried it?

 

 

HOW DOES THE UNICHIP WORK?

THE UNICHIP is an extra computer that gets wired into the vehicle's wiring harness. It intercepts various signals and changes them to suit the particular vehicle. The main point to understand with THE UNICHIP is that in most cases it only modifies signals. It has maps like we have described in the previous part of this section. The big difference is that where it has zeros in its maps the car will be standard.

We tune THE UNICHIP with a tuning box that is every installer will have. The one side of this box is plugged into the laptop computer and the other side into THE UNICHIP. This is an aluminum box with two tuning knobs (pots) and an insert button. Once they are activated through the tuning program the red pot changes the timing and the blue pot the fuel. If we turn the red pot to the left it will make the timing slower. If we turn it to the right it will make it faster. Turning the blue pot to the left makes the vehicle leaner and turning it to the right makes it richer. The insert button sends the new values to THE UNICHIP where it is now stored.

Let's say that the car's ECU makes the timing 34 degrees BTDC at load-site 50, speed-site 100. (This will be about half-throttle at 4000 RPM). If we go to the same point on THE UNICHIP we can then make the timing slower or faster. Let us say that the car wants the timing at 32 degrees for best performance at this point. You will turn the timing pot to the left and see that the power is increasing. Once you found the best point in the above example it will show up as minus two degrees on THE UNICHIP, not as 32 degrees. You will also look at the mixtures and set it to the desired value. Also understand that this will make the existing map in the car's ECU richer or leaner and is not the actual value in the car's map. Once you are happy with the settings you will press the insert button. This will send the data to THE UNICHIP and immediately make it active. The next time the driver drives at this load and RPM point THE UNICHIP will automatically make the timing two degrees slower and set the mixtures to whatever it was set to by you at the time.

The basic idea is that we can drive the car at any load and RPM point and change the timing and fuel settings at this particular point. We can then set the car for economy or for power. The logical way is to set the car for economy at part loads and for maximum power under full-load. More details when you get signed up as a dealer.

Here is an example of what the mixture should typically be set to under the different load and RPM points. Please note; these values are not correct for any turbocharged or supercharged vehicle. Part load settings are not applicable to vehicles with lambda sensors

 

 

Good Fuel Map

(in % CO)

Revs per minute

Speed site number

Load site number

Full throttle map

0

10

20

30

40

50

60

70

80

90

500 RPM

0

1.20

2.00

2.00

2.00

2.00

2.00

2.00

2.00

2.00

2.00

3.00

800 RPM

10

1.20

2.00

2.00

2.00

2.00

2.00

2.00

2.00

2.00

2.00

3.00

1000 RPM

20

1.20

2.00

2.00

2.00

2.00

2.00

2.00

2.00

2.00

2.00

3.00

1200 RPM

30

1.20

2.00

2.00

2.00

2.00

2.00

2.00

2.00

2.00

2.00

3.00

1600 RPM

40

0.40

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

3.00

2000 RPM

50

0.20

0.20

0.20

0.20

0.20

0.20

0.20

0.20

0.40

0.50

3.20

2400 RPM

60

0.20

0.20

0.20

0.20

0.20

0.20

0.20

0.20

0.40

0.50

3.20

2800 RPM

70

0.20

0.20

0.20

0.20

0.20

0.20

0.20

0.20

0.40

0.50

3.20

3200 RPM

80

0.20

0.20

0.20

0.20

0.20

0.20

0.20

0.20

0.40

0.50

3.30

3600 RPM

90

0.20

0.20

0.20

0.20

0.20

0.20

0.20

0.20

0.40

0.50

3.40

4000 RPM

100

0.20

0.20

0.20

0.20

0.20

0.20

0.20

0.20

0.40

0.50

3.50

4400 RPM

110

0.30

0.30

0.30

0.30

0.30

0.30

0.30

0.30

0.50

0.60

3.60

4800 RPM

120

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.20

1.30

1.50

3.50

5200 RPM

130

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.20

1.30

1.50

3.80

5600 RPM

140

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.20

1.30

1.50

4.00

6000 RPM

150

1.50

1.50

4.50

1.50

1.50

1.50

1.50

1.70

1.80

2.00

4.50

6400 RPM

160

1.80

1.80

1.80

1.80

1.80

1.80

1.80

2.00

2.10

2.40

4.50

Typical Timing map with idling and full throttle maps in degrees BTDC

Revs per minute

Speed site number

Idling map

Load site number

Full throttle map

10

20

30

40

50

60

70

80

90

500 RPM

0

14

8

8

8

8

7

7

7

7

7

6

800 RPM

10

8

8

8

8

8

8

8

8

8

8

6

1000 RPM

20

2

11

11

11

10

10

10

9

9

9

7

1200 RPM

30

-6

14

14

14

14

13

13

13

13

12

10

1600 RPM

40

-11

20

20

19

19

19

19

18

18

18

14

2000 RPM

50

-16

24

23

23

23

22

22

22

22

21

17

2400 RPM

60

-21

28

28

28

28

28

28

28

24

22

21

2800 RPM

70

31

31

31

31

30

30

30

24

24

24

22

3200 RPM

80

33

33

33

31

31

31

31

24

24

24

22

3600 RPM

90

38

38

38

38

38

38

33

33

33

28

26

4000 RPM

100

44

44

44

44

44

39

38

33

33

30

29

4400 RPM

110

44

44

44

44

44

40

39

37

34

30

29

4800 RPM

120

44

44

44

44

44

38

34

32

30

29

27

5200 RPM

130

48

48

48

48

48

45

44

35

32

30

29

5600 RPM

140

48

48

48

48

48

46

45

35

33

30

30

6000 RPM

150

48

48

48

48

48

48

46

35

34

33

31

6400 RPM

160

48

48

48

48

48

48

48

39

38

35

32

Technically speaking this is the best there is because this is real time tuning - the adjustment you make you see immediately and it is as accurate as it can get. You don't have to stop the vehicle, alter timing or fuel by burning the chip and take the car up to speed and take a reading again. Changing the timing or fuel only takes seconds.

[Lorrliew]

There is a lot of discussion on this, do a search in this forum.

 

Cheers!