This is a good discussion of the Pros and Cons of one-wire VS the OEM 3-wire alternators. I suggest you read it before you make a switch so you understand the differences.
This article is 3 web pages, so be sure to read right to the bottom of the page to find the link to the next page.
EDIT: Found this warning on Affordable EFI's site about the effects of one-wire alternators on EFI systems. Low voltage leads to low fuel pressure and slow injector response. Note that the EBL system monitors fuel pump and injector voltage and compensates for this. EBL is a very comprehensive control system. I don't know if FiTech or others do this.
"IMPORTANT NOTE: Older style single wire Delco alternators do not work well with fuel
injection systems. We do not recommend or provide support for vehicles equipped with single
wire alternators such as described above. Many people like to use single wire GM Delco
alternators. These alternators need to see elevated engine RPMs before they begin to charge. If
you are using this type of single wire alternator, beware that you may not have the proper voltage
provided to your system on initial start-up. Simply blipping the throttle will bring you up to
proper voltage. We do not recommend these types of single wire alternators for fuel injection
applications"
This article is 3 web pages, so be sure to read right to the bottom of the page to find the link to the next page.
EDIT: Found this warning on Affordable EFI's site about the effects of one-wire alternators on EFI systems. Low voltage leads to low fuel pressure and slow injector response. Note that the EBL system monitors fuel pump and injector voltage and compensates for this. EBL is a very comprehensive control system. I don't know if FiTech or others do this.
"IMPORTANT NOTE: Older style single wire Delco alternators do not work well with fuel
injection systems. We do not recommend or provide support for vehicles equipped with single
wire alternators such as described above. Many people like to use single wire GM Delco
alternators. These alternators need to see elevated engine RPMs before they begin to charge. If
you are using this type of single wire alternator, beware that you may not have the proper voltage
provided to your system on initial start-up. Simply blipping the throttle will bring you up to
proper voltage. We do not recommend these types of single wire alternators for fuel injection
applications"
