holley throttle body

[bonnieclyde100]

hi i am new to all this efi stuff and may need some help here and there. i have a 1969 chevy truck that i would like to put efi in it wish me luck . i was wondering if anyone could tell me if you can use a gm obd1 ecu to run a holley projection 4di throttle body so you can have 4 barrels instead of just 2?

[dave w]

I'm thinking not really a good idea to use a factory computer to run the 4 barrel / 4 injector Holley Throttle Body. The factory computer has electronics that were designed for two injectors, not four injectors. I'm thinking with some good soldering skills and the correct electronic parts (MOSFET's), the factory computer could be modified to correctly operate / handle the current needed when using four Holley TBI injectors.

dave w

[EagleMark]

http://www.dynamicefi.com/4-INJUpgrade.php

[gregs78cam]

^+1, works very well.

[bonnieclyde100]

http://www.dynamicefi.com/4-INJUpgrade.php

thanks for the link this will sure come in handy

[dave w]

I just noticed a change in business policy from Dynamic EFI, you don't need to purchase an EBL system to get the 4 injector upgrade.

dave w

[bonnieclyde100]

^+1, works very well.

im new to this stuff and im not sure what this means

[bonnieclyde100]

I just noticed a change in business policy from Dynamic EFI, you don't need to purchase an EBL system to get the 4 injector upgrade.

dave w is there a better or cheaper way to go than their ebl system cause my engine has a larger cam in it and will need to be programed for that cam and probably wont work off of stock programing.

[dave w]

is there a better or cheaper way to go than their ebl system cause my engine has a larger cam in it and will need to be programed for that cam and probably wont work off of stock programing.

The EBL system is a good system, mostly because it beginner friendly and the support from Dynamic EFI. Either system Factory or EBL will have a steep learning curve for the beginner tuner!

dave w

[gregs78cam]

im new to this stuff and im not sure what this means

It means I agree. I had it done to my '7427 to run the two factory TBIs.

[bonnieclyde100]

It means I agree. I had it done to my '7427 to run the two factory TBIs. do you have a picture of that i would like to see it because i may do that on my other truck

[gregs78cam]

http://www.gearhead-efi.com/Fuel-Injection/showthread.php?164-My-Dual-TBI-Camaro-Project

[EagleMark]

Looks cooler in person! :rockon: