Lexus GX Tuning
7 supported Lexus GX applications, 2003+.
Lexus
7 supported GX tunes
Select Version
All Supported Lexus GX Tunes
| Engine | Years | Version | Stock power | Controller | Platform |
|---|---|---|---|---|---|
| 550 (3.4T V6) | 2023+ | 354 hp | ECU Denso Gen4 | AutoTuner | |
| 4.0i V6 | 2009+ | 273 hp | ECU Denso 76F00xx | AutoTuner | |
| 4.0i V6 | 2009+ | 273 hp | ECU Denso Gen2 | AutoTuner | |
| 460 | 2009+ | 301 hp | ECU Denso 76F00xx | AutoTuner | |
| 4.0i V6 | 2003+ | 273 hp | ECU Denso 76F00xx | AutoTuner | |
| 4.0i V6 | 2003+ | 273 hp | ECU Denso Gen2 | AutoTuner | |
| 470 | 2003+ | 235 hp | ECU Denso 76F00xx | AutoTuner |
Other Lexus Models
About Lexus GX tuning
Rapid Racing supports 7 Lexus GX applications from 2003+ through AutoTuner, with stock outputs up to 354 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: 4.0i V6, 460, 470, 550 (3.4T V6).
Supported controllers: Denso 76F00xx, Denso Gen2, Denso Gen4.
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.