The GMC Sierra 6.6 Duramax 365hp (2008 - 2013) produces 365bhp and 894Nm in standard form. A Stage 1 ECU remap can raise output to 395bhp and 945Nm, a gain of 30bhp and 51Nm, with no hardware modifications required.
Interested in a Stage 1 remap for your GMC Sierra? Get in touch and we will discuss the best options for your vehicle.
JSM Diagnostics comes to you. Mobile ECU remapping across Medway and the surrounding areas.
Call us: 07711 934 905
Mon – Fri: 8:30am – 5:30pm