I have a few questions for those with knowledge on this subject.
I have a holley 750 cfm 4 barrle TBI unit, it came off of a truck that we built years ago 97 or 98. It was on a small block in an 89 chevy truck with the stock computer, Ed wright did the dyno tune on it and it worked great

Question is: I am thinking of using this again and from what I have read it wont work. What gives?
I have search this forum and have not come up with much.

Thanks

 

Really?

https://www.thirdgen.org/forums/tbi/...anken-tbi.html

And that is just one, in what a good search will give you.

 

Quote: Question is: I am thinking of using this again and from what I have read it wont work. What gives?

I think it is all about the ECU and the inability to handle the 4 injectors. You need an aftermarket ECU. EBL-ECU is the hot ticket. dynamicefi.com.

 

I dont have the ecu that was running the unit before but there were no mods to the ecu, so what was different about this throttle body that allowed the ecu to run it with 4 injectors?

 

The unit I have is made by holley, I havent seen to many of them.

 

Uses Holley ECU.. My guess. Called Holley Projection. Still sold by Holley. Later units are sequential opening. Available used EBay.

 

Its a 750 cfm unit and it runs of the stock ecu it was sold by Howell years ago.

 

If it ran stock ECU then maybe the injectors that Holley sold with unit are compatible with GM ECU. I was of belief Holley was not compatible other than the TB itself with GM. Maybe someone else can offer more info.