ECU Installation

Since the ecu has been improved to expand applicability and ease installation, first we need to determine what ecu you have.

On the front of your ECU with the plug down in the lower left corner should be one of the following stickers.

“91-93 US VR4″ Version 1 Plug and Play Flash Ecu Installation

91-93 US VR4 Sticker

“91-93 US VR4/91-98GTO” Version 2 Plug and Play Flash Ecu Installation

91-93 US VR4/91-98 GTO Sticker

“91-93 US VR4/91-98GTO/91-95 SL Fed Spec” Version 3 Plug and Play Flash Ecu Installation

91-93 US VR4/91-98 GTO/91-95 SL Fed Spec Sticker

“94-97 US VR4″ Plug and Play Flash Ecu Installation

94-97 US VR4 Sticker

If the sticker is missing or damaged, you can Contact us for ecu version identification.