I have a 500 efi intake wiring harness ect... Its going on a 572 and will have the new Vortech XB110 V11 supercharger. I sent the ECU off to be reprogramed and was told its out of date and cant be reprogramed. Im looking into a diffrent system that I can tune or a self tuning ECU. Has anyone retro fitted one of these intakes? Any advise would be a hugh help

Who did you send your ecu too?..

The Holley HP EFI system is an easy retrofit and would work very well for your app. That intake however isn't the best match for your combo but will work and still make decent power; I'd look into a different throttle body though. FAST also has a marine version of their XFI that would work for you but, it isn't a potted unit like the Holley and has a lot less features.

Try Dustin Whipple. Even though its a Vortec, Dustin has alot of experience programing ECU's.

The only reason i was wanting to use this intake was because it was already on the boat before and has the vortech intercooler for it. Its is carburated now with a V4 J trim. I sent the ECU to Arizona Speed and Marine. After reading too many blown up motors from him on here I'm not willing to take that chance, I'll look into Holly and fast, thank you HaxbySpeed....

You wouldnt happen to have a number for Dustin Wipple would you?

Phone # for Dustin Whipple 559-442-1261. Should get you to his office.

No way that anybody is going to be able to tune an ECM for you on your setup without doing it on a dyno or in real time in the boat with an O2 sensor.

I would assume you had a mefi-3? There is only about 100+ shops these days that can tune it and 10,000 amateur home tuners that have bought mefi-burn software and did there own so not sure why "it's out of date"? You really need to have it tuned on a dyno though so who ever programs it doesn't just throw a bunch of extra fuel at it to be safe, Smitty

Listen to the artic what he is saying is true.

Although a Mefi 3 isn't the latest and greatest, it certianly isn't "out of date" and it certianly will work. There are a few that can tune it CORRECTLY. As mentioned, spend the money to have it tuned on a dyno. It is money well spent.
Where are you located?
Eddie

The ECU I have is the same one that came with the motor in 04, Im not sure which one that is. I live in Beaumont TX area. I was just thinking if I had a setup with a wideban like the Holley set up I could tune it myself. I do agree that there is no better way to tune any motor than to put it on a dyno, and if I have to I will do that. Ive had race cars but they were carburated and I can tune them but Im new to the EFI systems. Thank you guys for your help and input