Just wondering if anyone is running the atomic cosworth forged piston? Do they run silent, especially when cold? Do u know if these pistons are made by cosworth or are they made elsewhere? I know they were designed by cosworth but I'm a bit sceptical on where they are made

A general rule is, forged pistons will not be quiet when cold. they grow as they heat up. expect them to be rattly on startup. couldn't tell you where they are made sorry.