Has anyone had a chance to test (dyno or track) one of the new Holley 080804 Ultra HP 850s? This is the latest 1.56" venturi x 1.75" butterfly + downleg booster version.

I know that 'AndyF' has tested a new "True 950" version of the Ultra HP and said it worked very well, too. Still haven't seen anything of note re: the new 850, though.

I'm curious about any results, how close the out-of-the-box tune was for your application, air-fuel curve, etc.

Thanks.