I did the crios mod on my 02 2.7 about 2 weeks ago, and am loving the additional sound at idle, and cruising at 2500 to 3000 RPM. That is where I notice it the most, but I am sure it adds a little sound all the way to redline (de-snorkled intake noise drowns it out).
I'd love to drill another hole in each side but with the welded on tip, 1 hole/side was hard enough. Maybe I can find a bigger bit and make them larger.
Thanks for the idea, crios!
