ive got a R1 2oo3 fi engine, has it got a rad fan switch built into the system alraedy, ?.

The ECU controls the rad fan on the R1.

I got the same engine going in my Indy at the BEC Center. Fan switches on auto when needed but you can also overide and have it on at any point using a switch if needed.

thanks for the quick replys lads.

Good luck with the bec centre conversion Kriss.