Calling all fuel injection gurus

[Captkaos]

Kenny, You got a bad ground somewhere. The ECM2 lead should be pink/black.
Are you using nothing from the ECM except the fuel pump?

[454HO]

Kenny,

The ECM only turns on the fuel pump relay for a few seconds when you first turn on the key. This is only to prime the fuel line and provide fuel pressure for start up. Once the engine starts, the oil pressure switch is what is powering the fuel pump circuit. Do you still have the oil pressure switch hooked up? Is the fuse that is blowing the 10A ECM_B fuse shown on this diagram?

As for going fuel injection, the factory 454 TBI system is barely good enough for a 260HP stock motor. I think you have a pretty healthy cam, and are probably about double that horsepower. So I would be looking for a multi-port injection setup. You can get an intake manifold and fuel rails from Edelbrock and an aftermarket ECM from someplace like FAST. Then all you need to do is build the wire harness.

[87Lowrider]

Originally Posted by 454HO

Kenny,

The ECM only turns on the fuel pump relay for a few seconds when you first turn on the key. This is only to prime the fuel line and provide fuel pressure for start up. Once the engine starts, the oil pressure switch is what is powering the fuel pump circuit. Do you still have the oil pressure switch hooked up? Is the fuse that is blowing the 10A ECM_B fuse shown on this diagram?

As for going fuel injection, the factory 454 TBI system is barely good enough for a 260HP stock motor. I think you have a pretty healthy cam, and are probably about double that horsepower. So I would be looking for a multi-port injection setup. You can get an intake manifold and fuel rails from Edelbrock and an aftermarket ECM from someplace like FAST. Then all you need to do is build the wire harness.

Yes... the switch is hooked up on the left side of the block along with a sender for the DD dash. Yes, that's the fuse that is blowing.

All I have to do is build the harness - haaaa you make it sound easy!!! lol


Kenny

[87Lowrider]

Originally Posted by Captkaos

Kenny, You got a bad ground somewhere. The ECM2 lead should be pink/black.
Are you using nothing from the ECM except the fuel pump?

You're probably right! From what I know... wiring is stock. So, I don't think anything else is on ECM2.

I started from the bottom up and was reading Gregs reply and didn't answer yours.

I'll check my grounds!

Thanks!

Kenny