Quote Originally Posted by Berta
Wrong killa. gsr head flows more than the itr/b16 heads.
nope. in stock form, the b16 and gsr head flows within 2 cfm's of each other. alaniz did the test a few years ago. i used to have the chart. but 2 cfm's doesnt mean **** honestly. they are about the same. the gsr has slightly higher compression due to the smaller combustion chambers. the itr is a b16 head with a port job and will outflow either in stock form.