Holley TBI

[Jason4x4]

Got this stuff in my parts truck, TBI and Comp W/ Harness.

Can anyone tell me anything about it? Worth anything? anything info at all?

 

[lak2004]

I have heard nothing but bad reviews about them. I think it is a PIA to tune them properly and I have heard that they can be unreliable (not sure how). If you look in the EFI threads there is a lot of questions and comments about the Projection system.

 

[454k30]

I've seen it on a vehicle before. The tuning wasn't hard to do but it never seemed to be spot on. Running lean sometime, rich other times. Also the injectors had a habit of loosening themselves and coming apart during long distance driving. No parts ever fell down the intake but it would gush fuel down there and cause all sorts of problems. On the other hand it is fuel injection, and compared to some it is cheap. Give it a shot and see what you think. If I had the parts I would install it.

 

[Thunder]

Looks like an old holley Pro-Jection system to me. The 670 cfm TB has the old style injectors that were prone to leaking. Will fit most any V8
The Fuel Controler should have 4 or 5 screws or knobs to set the fuel curve. Needs constant tuning.
Wont support much HP. Maybe 275hp.
Not realy that great of a system. Old analog tech. All adjustments must be done manually
New projection systems are digital and can use a 02 sensor to set fuel ratio
Stock GM TBI is far and away better.

Might be worth $100.00? maybe more. On Ebay

 

[rcamacho]

Another alternative would be to hook up the TBI to an alternative controller such as a GM computer or megasquirt.