is it worth me putting the 05 SC on an 02 car.......best guess on gains?

 

I thought the rotor coating was all that was different on the 05 sc, hence maybe you'd gain 1 or 2 hp, unless the 02 sc failed I doubt it'd be worth the expense. Someone with actual experience could chime in though.

 

That is my sense of it.

 

AFAIK, it will only slightly drop the outlet temp so as said, a max of 1-2hp gain.
I've put a spare 05' JCW SC with my 02', along with the 19% and it was just slightly cooler....thats it. Not worth the money, but Ive got it incase of a blowup.
Im put my old SC back on as there was little difference.