I have pipercross foam filter in my 4mo and have to say it does stay cool. Dont know if the heatshield is helping with that.. as said be good see some graphs etc on it.. there was debate about this on ukmivs while ago too and lot guys said pipercross panel or cone foam filter has proven have lower temps etc then a paper style cone filter..was not s2000 filter it was compared to tho

ill.try digin that thread up