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Old 01-10-2018, 12:48 PM   #1 (permalink)
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Question 456M GTA recommended upgrade?

I am thinking of purchasing a 2003 456M GTA--but I have heard that the 456 models have a recommended engine upgrade involving the cylinder heads and/or valves which (of course) is extremely expensive.

I can't find anything more about that. Am I just plain wrong or am I thinking about another Ferrari model? Needless to say I don't want to buy a used Ferrari only to have it eat me alive in maintenance costs. Can anyone help? Thanks.
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Old 07-10-2020, 07:13 AM   #2 (permalink)
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Hi, datjat. I'd never heard of the ECU upgrade. BTW, How much did your guides cost to be redone. (I had Manley valve blanks custom ground at the same time as the new guides were put in.
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Old 07-11-2020, 11:38 AM   #3 (permalink)
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Default 456M upgrade

From the lack of forum response there is no recommended software upgrade. Unfortunately, I sold the car about 2 years ago and with it went the service records. But if I recall it was quite expensive over 10k. Sorry I canít be more help. Nice car but overheating issues driving in Arizona made it expendible.
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Old 07-15-2020, 10:42 PM   #4 (permalink)
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Eventually you need to sell the car. I usually consult the internet to resolve the issues of my car. Whoever bought it will surely love it, but then again that person still need to spend a couple of bucks to fix things up.
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