So ive read a few small threads on yank forums
heres the first
http://www.clublexus.com/forums/perf...-on-gs300.html

its about stopping the coolant flowing through the throttle body, cooler air intake and supposedly better performance?

also these kits that all jap cars seem to have
http://page3.auctions.yahoo.co.jp/jp/auction/c292184599
of which i cant find any info on? any ideas?
reading the ad seems to indicate it stops a coolant heat spot near cylinder 6, sounds similar to what 7m's had?