GMC Sierra 1999 - 2007

Engine	Fuel	Stock	Stage 1	Gain
4.3 V6 200hp LU3	Petrol	200 hp / 350 Nm	220 hp / 370 Nm	+20 hp / +20 Nm
4.8 V8 295hp L20	Petrol	295 hp / 414 Nm	315 hp / 435 Nm	+20 hp / +21 Nm
5.3 V8 295hp LMG	Petrol	295 hp / 447 Nm	315 hp / 470 Nm	+20 hp / +23 Nm
6.0 V8 360hp L96	Petrol	360 hp / 525 Nm	380 hp / 545 Nm	+20 hp / +20 Nm
6.6 Duramax 365hp LMM	Diesel	365 hp / 894 Nm	395 hp / 945 Nm	+30 hp / +51 Nm
8,1 V8 330hp L18	Petrol	330 hp / 610 Nm	350 hp / 630 Nm	+20 hp / +20 Nm

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