Buick Rainier
Buick Rainier tuning
ECU remap and chiptuning files for the Buick Rainier. Pick your engine and generation below to see original vs tuned power and torque, available stages and options.
Rainier 2004 - 2007
| Engine | Fuel | Original | Tuned | |
|---|---|---|---|---|
| 4.2 V8 279hp, Stage 1 | Petrol | 279 hp | 295 hp | View → |
| 5.3 V8 294hp, Stage 1 | Petrol | 294 hp | 310 hp | View → |
| 5.3 V8 304hp, Stage 1 | Petrol | 304 hp | 321 hp | View → |