Harness- XFI Fuel/Oil Logging This is a "Custom Harness for XFI or GN-ECU Fuel and Oil Logging " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. Utilizing transducers, this harness allows your... MSRP: Was: Now: $229.00 Add to Cart
