Transmissions
efi2000 has a vehicle library of common engines and parts you can select from. Picking a part fills your project with verified data, so you can configure it quickly, and that data is used to improve your tune.
Gear ratios, with tire size and vehicle weight, link engine RPM to road speed. efi2000 uses them for the virtual dyno and drag strip estimates, and to tell which gear a log pull was made in.
10 transmissions
| Make | Model | Gear 1 | Gear 2 | Gear 3 | Gear 4 | Gear 5 | Gear 6 | Gear 7 | Gear 8 | Gear 9 | Gear 10 | Reverse | Notes | Updated |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mazda | M526 | 3.136 | 1.888 | 1.330 | 1.000 | 0.814 | — | — | — | — | — | 3.758 | MX-5 90-05 5-speed | Oct 18, 2026 |
| BMW / Getrag | S5D 250G - Z3 2.5i | 4.230 | 2.520 | 1.660 | 1.220 | 1.000 | — | — | — | — | — | 4.040 | 2001 Z3 2.5i manual. Source: https://www.press.bmwgroup.com/usa/article/attachment/T0021978EN_US/41275 | Oct 25, 2026 |
| Toyota / Aisin | R154 - A70 Supra | 3.251 | 1.955 | 1.310 | 1.000 | 0.753 | — | — | — | — | — | 3.180 | 7M-GTE manual; ratios exclude final drive. Source: https://tsrm.sasquatchvc.com/mk3/tsrm/MT/2 | Oct 25, 2026 |
| BMW / Getrag | 260/6 - E34 535i | 3.830 | 2.200 | 1.400 | 1.000 | 0.810 | — | — | — | — | — | 3.460 | E34 535i overdrive variant; other Getrag 260 variants may differ. Source: https://www.e34chassis.com/wp-content/uploads/2023/08/Bentley_BMW_5-Series_Service_Manual_edited_eF1x.pdf | Oct 25, 2026 |
| BMW / ZF | S5D 320Z - Z3 3.0i | 4.210 | 2.490 | 1.660 | 1.240 | 1.000 | — | — | — | — | — | 3.850 | 2001 Z3 3.0i manual. Source: https://www.press.bmwgroup.com/usa/article/attachment/T0021978EN_US/41275 | Oct 25, 2026 |
| Toyota / Getrag | V160 - A80 Supra UK | 3.827 | 2.360 | 1.685 | 1.312 | 1.000 | 0.793 | — | — | — | — | 3.280 | 1993 UK Supra Turbo 6-speed; not V161. Source: https://media.toyota.co.uk/wp-content/uploads/sites/5/pdf/Supra-Gen4-UK-launch-pack-1993.pdf | Oct 25, 2026 |
| Mazda | MX-5 NC 6-speed - 2007 | 3.815 | 2.260 | 1.640 | 1.177 | 1.000 | 0.832 | — | — | — | — | 3.603 | 2007 US NC manual. Source: https://news.mazdausa.com/download/2007-MX-5-Spec.pdf | Oct 25, 2026 |
| Mazda / Aisin | AZ6 - MX-5 NB 6-speed | 3.760 | 2.269 | 1.645 | 1.257 | 1.000 | 0.843 | — | — | — | — | 3.564 | Standard NB 6-speed; Mazdaspeed fourth differs slightly. Not interchangeable with every AZ6 variant. Source: https://news.mazdausa.com/download/cur_mspeed_specs.pdf | Oct 25, 2026 |
| Toyota / Aisin | J160 - Lexus IS200 | 3.874 | 2.175 | 1.484 | 1.223 | 1.000 | 0.869 | — | — | — | — | 3.672 | IS200 SportCross 6-speed AZ6 family; verify donor housing. Source: https://media.lexus.co.uk/wp-content/uploads/sites/3/pdf/141010DM5-IS-200-SportCross-launch-pack-2001.pdf | Oct 25, 2026 |
| Toyota / Aisin | W58 - A70 Supra | 3.285 | 1.894 | 1.275 | 1.000 | 0.783 | — | — | — | — | — | 3.768 | 7M-GE manual; ratios exclude final drive. Source: https://tsrm.sasquatchvc.com/mk3/tsrm/MT/2 | Oct 25, 2026 |