GMC Sierra 8,1 V8 330bhp tuning file
1999 (2007) · Petrol
Stage 1 remap: +20 bhp & +20 Nm
ECU
Read methods
Available solutions
Upload the original read of your GMC Sierra 8,1 V8 330bhp and we'll return a Stage 1 tuning file worth 350 bhp and 630 Nm – up from 330 bhp and 610 Nm, an increase of +20 bhp (6%) and +20 Nm. Every file is checked by a calibrator before release, and DECAT, DTC Removal, FLAPS, Pop & Bang Crackle map can be combined in one upload.
Who is this remap for?
Naturally aspirated petrol engines gain less than turbo engines, but a remap still improves throttle response and smooths out flat spots in the power delivery. 330 → 350 bhp equals roughly 246 → 261 kW.
Figures are guide values from our rolling road and comparable vehicles. Results depend on the vehicle's condition, hardware and fuel quality. Remapping in the UK: let your insurer know about the modification. DPF, EGR and AdBlue solutions are supplied for off-road and motorsport use only and are not legal for use on UK roads.
Engine specification
| Fuel type | Petrol |
| Engine size | 8128 CC |
| Compression ratio | 9.1 : 1 |
| Bore × stroke | 107.9 X 111.0 mm |
| Engine code | L18 |
Other GMC Sierra 1999 (2007) engines
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