New chiptuning with specific software for GMC Sierra Racing Box. Increase power, fuel economy. Limited offer. Buy now!
| Before | RACINGBOX | |
|---|---|---|
| Power | 310 hp | 365 hp |
| Torque | Standard | +40% |
| Before | RACINGBOX | |
|---|---|---|
| Power | 365 hp | 421 hp |
| Torque | Standard | +40% |
| Before | RACINGBOX | |
|---|---|---|
| Power | 397 hp | 455 hp |
| Torque | Standard | +40% |
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