F1 TCU Relay Change Interval?

I replaced mine at 15k then keep the assumed good original in the tool kit for chance of failure in the future. I would think to have a spare at any given time is about all that would be necessary.

 

mine was 12 years old with 55,000 miles on it when my pump started running for a long time (45 seconds) when I opened the door, replaced the relay and all is good again. I don't think its a regular swap item, just something to have as a spare, I wont change it again until I have another problem.

 

I changed mine annually when I had an F1 and doing about 8k a year.

http://aldousvoice.wordpress.com/2012/09/18/ferrari-360-f1-pump-relay-preventative-maintenance/

 

My mechanics at Competizione (board sponsors) suggested every two years. You dont want to screw up the whole system over a simple part.

 

Just bought one 10 minutes ago on EBay.....$61 shipped, upgraded Tyco unit.
Will Install this one, keep old one on board as spare.