Colorado Apten / Amazon chip users???

[mkdiehl]

Does anyone on here have the Apten blower and use an Amazon Racing chip?

I am curious on how that turned out for you......

 

[CobraBob]

I have that combo. I went .5 to 1.25 lean after the Apten. So now I need a new tune. Bummer! Others, though, have not seem much of a change. Might be by particular combo.