Honda Legend Tuning
2 supported Honda Legend applications, 2004+.
Honda
2 supported Legend tunes
Select Engine
All Supported Honda Legend Tunes
| Engine | Years | Version | Stock power | Controller | Platform |
|---|---|---|---|---|---|
| 3.5i V6 (J35A) | 2004+ | KB1-KB2 | 295 hp | ECU Keihin SH7058 | AutoTuner |
| 3.7i V6 (J37A) | 2004+ | KB1-KB2 | 300 hp | ECU Keihin SH7058 | AutoTuner |
Other Honda Models
About Honda Legend tuning
Rapid Racing supports 2 Honda Legend applications from 2004+ through AutoTuner, with stock outputs up to 300 hp. Every calibration is built for your exact engine, fuel, and modifications, then verified on our Dynojet 424xLC2 in Jenison, MI, serving Grand Rapids and West Michigan.
Supported engines: 3.5i V6 (J35A), 3.7i V6 (J37A).
Supported controllers: Keihin SH7058.
Don't See Your Vehicle?
These lists cover off-the-shelf tuning platforms. We also do standalone ECU installs and custom calibrations, so reach out and we'll tell you what's possible for your build. Compatibility data last updated 2026-09-24.