Holley HP EFI and others
It would be nice to have a system that controls your 4l80e and plays nice with a 5.3 pushing an 80mm GT45 with 20psi. If you keep modifying your system and paying $500 to get it tuned, these systems may be an awesome addition to any build.
Would love to hear from people who have owned, own or have first hand experience with the efi systems out there.
None of them are "auto tune" to the extent it will do everything for you. They all take a certain amount of tuning knowledge, and an initial setup. The "auto tune" is limited to plotting the A/F correction and applying it to the VE. That's about it. There are no systems that are going to do the work for you, except FAST EZ EFI, and that system leaves A LOT to be desired.



