Hi Monte,

Thank you for the information on the Holley ECU's. I am planning to run dual 1000 cfm throttle bodies, and Holley has two that I am interested in:

Holley 112-577 which is the machined billet unit that sells for around $560.00 each

Holley 112-588 which is the cast unit that sells for around $360.00 each.

Question is, which one is better in a dual configuration, and why?

Sorry for all of the questions, I just want to make sure I order correctly the first time.

Thank you again, Mark