This question was posted on a forum I frequent and the consensus was no to very little power gains but the OP seems to thing significant/measurable gains can be had without altering the stock tune (I am talking NA engines here and not the 6.2). Being that we have a lot of pro tuners here who have more dyno time and have experimented I would like to hear your take on this?
https://www.challengertalk.com/posts/8788185/
Thanks!