Ladies and gents,
I have searched but I am either blind or missed if this has been asked.

I have just upgraded my radiator hoses on my 05 STi to silicon hoses thanks to Mao for the suppy...

I have an STi radiator cap and I am wondering which cap to replace of the 2 standard ones being the radiator itself or the "overflow" cap near the TMIC.

Any help appreciated..

Cheers,

Joe.