CELL OPEN MASTERS Official Practice Results (UNOFFICIAL)
DATE:2007-12-16 WEATHER: Cloudy COURSE: Wet International South Course
| Pos. | No. | Driver | Type | Tire | Team | Time | Delay | Gap | Lap |
| 1 | 1 | Hiroji Sugihara | Vanspeed/ROTAX | YH | Hayakawa Racing | 1'05.531 | 69.44km/h | 4/4 | |
| 2 | 17 | Masahiko Sawamoto | Vanspeed/ROTAX | YH | Hayakawa Racing | 1'05.554 | 0.023 | 0.023 | 3/3 |
| 3 | 7 | Kenji Omori | TECNO/ROTAX | YH | Spirit R.R. | 1'07.053 | 1.522 | 1.499 | 7/9 |
| 4 | 3 | Katsunori Kato | birel/ROTAX | YH | Team Blue | 1'08.048 | 2.517 | 0.995 | 2/2 |
| 5 | 2 | Takamatsu Takashi | Vanspeed/ROTAX | YH | Hayakawa Racing | 1'08.943 | 3.412 | 0.895 | 2/3 |
| 6 | 16 | Norihiro Kobayashi | macMINARELLI/ROTAX | YH | Life Dou Sho MM Hanayan Honten | 1'09.766 | 4.235 | 0.823 | 7/9 |
| 7 | 15 | Tetsuya Nakanotani | TECNO/ROTAX | YH | Bellissimo RT☆MAX | 1'09.837 | 4.306 | 0.071 | 2/5 |
| 8 | 13 | Hidekazu Saeki | ARROW/ROTAX | YH | Team Aladdin & Pina | 1'10.641 | 5.110 | 0.804 | 2/2 |
| 9 | 6 | Tahara Yoshihiro | TECNO/ROTAX | YH | Spirit R.R. | 1'11.759 | 6.228 | 1.118 | 8/8 |
| 10 | 4 | Tomio Toshihiko | KOSMIC/ROTAX | YH | Kanes | 1'11.854 | 6.323 | 0.095 | 7/7 |
| 11 | 9 | Kenji Nakagawa | TONY KART/ROTAX | YH | ONE POINT & Team Kami | 1'12.479 | 6.948 | 0.625 | 4/5 |
| 12 | 12 | Masahiro Yamamoto | ZANARDI/ROTAX | YH | NEXT−ONE Racing | 1'13.751 | 8.220 | 1.272 | 8/8 |
| 13 | 14 | Yoshitake Gufushi | FA-KART/ROTAX | YH | Harada Kart Club | 1'15.338 | 9.807 | 1.587 | 6/6 |
| 14 | 11 | Iiyama Tomokazu | INTREPID/ROTAX | YH | Est−TT with HKC | 1'21.229 | 15.698 | 5.891 | 4/4 |
| 15 | 10 | Kazuya Suzuki | INTREPID/ROTAX | YH | Est−TT with HKC | 1'29.245 | 23.714 | 8.016 | 2/2 |
| 16 | 5 | Noriya Mizuno | birel/ROTAX | YH | Team Blue | Unable to measure | 0/1 |
