Ok I have holley tbi setup on a vortec 350 and it runs great mid 13's on street tires I want to go mpi with a single plane and my tbi base kinda like the edelbrock convertion that uses your stock ecm and you just splice the 8 injector harness in to your stock 4 wire's that went to your 2 injectors can I use tpi fuel rails injectors and some other parts on a sigle plane intake and my tbi base and just tune it and it work just the same as the edelbrock convertion setup?

 

I dont believe a TBI ECU can drive 8 injectors from what I heard. I think you have to swap out the ECU and do some wiring. maybe a search will provide more info.

 

Thats what I have allways been told but edelbrocks convertion kit says you use your stock ecu and they supply a custom prom.

 

That is what Edelbrock says:
Performer Multi-Point EFI Systems are designed for 1987-95 Chevy/GMC trucks with 5.7L & 7.4L engines originally equipped with Throttle Body Injection. These complete systems utilize the stock computer, stock sensors and throttle body unit (without the stock injectors) for a simple and effective conversion to multipoint fuel injection. Fuel is injected directly towards the valve for ideal fuel distribution and efficiency. 50-state street legal on most 1987-95 Chevy/GMC trucks and Sport Utility Vehicles.

These systems are not compatible with passenger car engine management systems.

I wonder why they say that?

Next question is do thay allow you to modify their startup chip or is it locked? If they set it it up for a truck application only it certainly would need to be tweeked. I wonder if emmishion compliance is an issue for them as far as passanger cars and or performance applications?

I feel an EBL'd GM puter and a Edelbrock victor jr port injection system may be a better idea?

 

Cuz its for a '747 not a '746. The '746 has air divert control, and a few other things the '747 lacks. It wouldn't be emissions compliant.

-- Joe

 

I thought a 7747 can not drive 8 injectors? does Edelbrock use a diff injector?

 

Look over at www.dynamicefi.com and take a look at the EBL system. Bob over there has got it to where you can run MPFI off a 747 and he's taught the ECU all sorts of new tricks. Really cool stuff.