0411/P59 98-07 GM ECU flash service

• VATS/Security delete
• Tire/Gear size change
• Setup for MAF only or Speed Density only (no tuning ONLY putting ECU into either mode)
• Update injector data (will need injector data from Manufacturer)
• Turn off Rear Oxygen Sensors.

If you need the PCM reprogrammed for speedometer calibration we will need the tire size and rear axle gear ratio.                                                                                                              

ECU is not included.