550 Maranello ECM Programming

1944 Views 5 Replies 3 Participants Last post by paul.zr1, May 29, 2004

paul.zr1

Discussion Starter · May 28, 2004

I dynoed my 550 before and after installing Tubi exhaust (the straight thru flavor) and lost about 10 hp and 10 #'s torque. I noticed the air fuel ratio was slightly leaner throughout the rpm range.

Does anyone know how to reprogram the ecm to add the fuel back in?

Regards,

Paul

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Andrew

· #3 · May 29, 2004

This company sells ECU chips. This should help by-pass/trick the Ferrari computer into doing what you want. Check them out:

http://www.powerchipgroup.com/choices.asp?entry=powerchipgroup.com

If you do go with them let them know Ferrari Forum referred you. I know a person there and it would be helpful.

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Andrew

· #4 · May 29, 2004

I guessed 1999 for your year and here is the direct link to the chip for your car:

http://www.powerchipgroup.com/interact/datasheets/datasheets_two.asp?pid=Fer0011

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Andrew

· #5 · May 29, 2004

Sorry, one last thing, I got way ahread of myself. WELCOME TO THE SITE

If you get the chip please let us know how it re-dynos and if they give you a graph post it. We have some 360 graphs and a 328 graph so a 550 would be nice too.

Cheers,
Andrew

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