2006-2007 4.2 Trailblazer tuned ecm

A custom tune for 2006–2007 4.2L Trailblazer/Envoy engines, enhancing power and simplifying the engine setup.

• The description claims improved throttle response and performance across the RPM range.
• The description claims a raised rev limiter for extended power output.
• The description claims modified cooling parameters for higher temperatures under certain conditions.
• The description claims removal of unneeded sensors and emissions controls.
• The description claims full VATS/security delete for easier starting.
• The description claims compatibility with the stock harness but requires additional modifications for proper operation.
• The description claims off-road use only and states it is not legal for street use.