Do I need the factory ecu?

[3MAX]

I'm working on a '90 model Blazer. I'll be using Holley's new Terminator EFI and installing Autometer gauges. So is there any reason i need to maintain the original computer? Does have any input with ABS?

 

[Russell]

Nope, you won't need it for anything. It only controls the engine and does not send any signals out anywhere except to the ALDL port and the check engine light.

 

[dremu]

The ABS on that truck is rear-wheel only, only in 2WD high, and is controlled by a separate computer up by the master cylinder/booster. Which you can unplug without ill effect.

-- A

 

[3MAX]

Good deal. Thanks guys.

 

[paratrooper307]

That's the nice thing about older vehicles. These days with the CAN/BUS systems with interconnected modules, you can't hardly splice a wire without the computer(s) causing a stink about it, lol.