I may need to upgrade the ECU and wiring harness on a port injected wedge. I am currently running a 15 YO FAST XFI system that has done well... until recently. I would want full laptop tunability. Self learn for the fuel map would be a nice upgrade over my current system also.

The dealers I have worked with no longer seem to sell FAST and not sure whether to go the dealer route or online.

What are pros and cons of the different makes and systems out there now? FAST, Holly, FI Tech... ?

Appreciate any recent experience and suggestions.

Thanks

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