PC3 USB

[TimF]

Hey gents,

Have you read through any of this?
http://www.hayabusa.org/forums/?act=ST;f...87279;st=0

Would be very interested to get your opinions on the following info about the GEN2 and Yoshi R-77. It seems as though the GEN2 ECU and 02 sensor are able to self-adjust to an "optimum" AFR...

Trust me we tested with and without load 14.1 is not too lean at all for this exhaust set-up, when we moved the entire AFR curve to 13.1 we gained way up top only 2hp so the bike obviously did not need any additional fuel. The basic tuners more air/more fuel test.

The cool part is the ECU adjusted for the load without issue. So if you tune to a set AFR or best power the 14.1 AFR is on the money. 13.1 or richer is just throwing gas out the tail pipe for no valid reason other than following what you normally do, thats when the light went off.

Also our dyno room has a 17 to 1 air exchange rate per minute and climate control its the best enviroment to do this type testing. Most shops have stuffy dyno rooms with just large fans moving exhaust fumes around the room.

Guys here is the AFR break down of the R-77 exhaust system installed, O2 sensor in place, high flow air filter. WOT pull.



Dynojet Research Inc.

Run Name: C:\DynoRuns\Suzuki\Gen II Hayabusa\Bailey 2008 R-77 Pipercross Race\R77 Pipercross & Ram Air O2 IN.drf

Run Title:

Run Notes:

Run Date: 1/16/2008 11:36:46 AM



R77 Pipercross & Ram Air O2 IN.drf: 68.17 °F 29.81 in-Hg Humidity: 16 % SAE: 0.97 Average Gear Ratio: 70.96



s RPM x1000 hp ft-lbs Air/Fuel

N/A 1.90 N/A N/A N/A

2.74 2.00 11.56 30.20 14.66

2.90 2.10 22.81 57.03 13.99

3.02 2.20 25.01 59.70 13.54

3.13 2.30 27.52 62.82 13.51

3.23 2.40 30.39 66.49 13.55

3.32 2.50 33.27 69.89 13.70

3.41 2.60 36.00 72.72 13.92

3.50 2.70 37.99 73.90 14.17

3.59 2.80 39.66 74.39 14.46

3.68 2.90 41.02 74.29 14.79

3.77 3.00 42.41 74.24 14.87

3.86 3.10 43.96 74.48 14.57

3.95 3.20 45.46 74.62 14.18

4.04 3.30 46.84 74.55 13.82

4.13 3.40 48.19 74.44 13.46

4.22 3.50 49.69 74.56 13.09

4.30 3.60 51.51 75.14 12.79

4.39 3.70 53.91 76.52 12.54

4.47 3.80 57.04 78.84 12.35

4.55 3.90 60.25 81.13 12.31

4.63 4.00 63.84 83.82 12.44

4.70 4.10 66.98 85.80 12.59

4.78 4.20 69.62 87.06 12.74

4.85 4.30 72.30 88.31 12.94

4.92 4.40 74.80 89.28 13.16

5.00 4.50 77.16 90.05 13.37

5.07 4.60 79.40 90.66 13.50

5.14 4.70 81.42 90.99 13.56

5.21 4.80 83.50 91.36 13.62

5.28 4.90 85.47 91.61 13.61

5.36 5.00 87.84 92.27 13.56

5.43 5.10 90.36 93.06 13.47

5.49 5.20 93.14 94.07 13.39

5.56 5.30 96.16 95.29 13.34

5.63 5.40 99.16 96.44 13.32

5.70 5.50 102.15 97.55 13.30

5.76 5.60 104.78 98.27 13.31

5.83 5.70 107.95 99.46 13.35

5.89 5.80 111.38 100.85 13.41

5.95 5.90 114.39 101.83 13.48

6.02 6.00 117.15 102.55 13.55

6.08 6.10 119.51 102.89 13.63

6.14 6.20 121.09 102.58 13.71

6.21 6.30 122.48 102.11 13.79

6.27 6.40 124.37 102.06 13.82

6.34 6.50 126.29 102.04 13.80

6.40 6.60 128.63 102.36 13.76

6.47 6.70 131.10 102.77 13.71

6.53 6.80 133.66 103.24 13.67

6.59 6.90 136.84 104.16 13.65

6.65 7.00 140.01 105.05 13.63

6.71 7.10 142.62 105.50 13.62

6.77 7.20 144.78 105.61 13.63

6.84 7.30 146.70 105.55 13.67

6.90 7.40 147.79 104.90 13.73

6.96 7.50 149.01 104.35 13.79

7.03 7.60 149.74 103.48 13.84

7.09 7.70 151.17 103.11 13.87

7.16 7.80 153.08 103.08 13.90

7.22 7.90 155.41 103.32 13.93

7.28 8.00 157.59 103.46 13.93

7.35 8.10 159.63 103.50 13.90

7.41 8.20 161.93 103.72 13.87

7.48 8.30 163.77 103.63 13.85

7.54 8.40 166.14 103.88 13.84

7.60 8.50 167.96 103.78 13.85

7.67 8.60 169.39 103.45 13.87

7.73 8.70 171.25 103.38 13.89

7.79 8.80 172.53 102.97 13.89

7.86 8.90 174.02 102.70 13.89

7.93 9.00 175.00 102.13 13.89

7.99 9.10 175.76 101.44 13.89

8.06 9.20 176.55 100.79 13.89

8.13 9.30 176.81 99.85 13.89

8.19 9.40 177.48 99.16 13.89

8.26 9.50 177.97 98.39 13.89

8.33 9.60 178.91 97.88 13.87

8.40 9.70 179.54 97.21 13.83

8.47 9.80 179.75 96.34 13.80

8.55 9.90 179.67 95.32 13.75

8.62 10.00 180.18 94.63 13.69

8.69 10.10 180.35 93.79 13.63

8.77 10.20 179.86 92.61 13.58

8.84 10.30 179.72 91.64 13.56

8.92 10.40 179.33 90.56 13.54

9.00 10.50 179.48 89.78 13.53

9.07 10.60 179.28 88.83 13.52

9.15 10.70 178.60 87.67 13.51

9.24 10.80 177.14 86.15 13.51

9.32 10.90 175.84 84.73 13.59

9.40 11.00 174.88 83.50 13.72

9.67 11.10 105.43 49.90 N/A

--------- --------- --------- --------- ---------

MAX: 9.67 11.10 180.35 105.61 14.87

MIN: 2.74 1.90 11.56 30.20 12.31