I was just wondering since I couldnt find a reason by searching...where does the Avenir's extra 20 hp come from? I am in need of a new longblock, and I just dont want to get a BB to be a couple steps behind from where I was with my Avenir. Does anyone know where it comes from? Thanks.

Josh

The wastegate is different, so it makes more boost.

So the manifold and turbo off of the Avenir silver top would create that extra 20 hp on a BB motor?