Doesn't make a difference, I have a 2012 so obviously no 2015 heads.
I know a guy that knocked 6 tenths off with this intake and e85
Viking - thank you so much for jumping in and doing this! Do you have any pictures of the holes you had to plug in the GT350 IM or any other technical details of the install?
Jake
I will see it tomorrow. I didn't have time to pick it up today.How did the graph look under 5k?