Stated Dyno Numbers

When you buy a tune does the manufacturer state the HP rating at standard conditions? Where would you find this info? Must you as them? Thank you.

Unfortunately there's no simple answer to this and since every dyno will provide a different power figure it is a very murky world we work in. If you're buying an off the shelf tune from the likes of Cobb (just as an example), then the numbers stated will likely be on their own in house dyno. Rather than the peak numbers you're better to compare the before and after numbers so you have a better idea of what you're likely to gain.