Is the Holley Unit marine Coast guard Approved

I was hoping the Fitech was an Option also , but I am also interested in the AEM also.

Yes, the Holley is USCG approved

The AEM unit also looks like an Option as Does the Fast , but the Cost vs. Features leads me back to the Holley.

You really cant beat the price of holley. I bought mine around X-mas of last yr with summit was running 10% all items. I think with 7" dash and the hp efi with ls harness and ntk sensor I paid 2300 for it. Dash alone was 700, so for 1500 bucks your getting a great ecu that will do just about anything you need a Marine ECU todo.

Two different boats with Holley efi. Easy to tune, easy to use. My new setup is pretty aggressive on the cam and with the big props only took me 15 min to have the in and out of gear transition perfect. Just a few other tweaks the next time I started it cold and it was on the money. If anyone ever needs any help setting one up close to the Indianapolis area I would be glad to help out.

Hello...I have been following this thread...has a yo e used a factory Merc thunder bolt distributor with this set up.....I don't know if it is even possible... anyone care to comment on this thanks

With the Thunderbolt, there would be no way to run sequential injection..


Holley makes a NICE plug & Play dual sync distributor. :)
https://www.holley.com/brands/holley.../distributors/

Thanks I'm very green when it comes to this.... thinking about doing this....

IMO run CNP with a crank trigger and cam sensor