Custom grind cam
Tuners usually work off of datalogging. But they can get there quicker if they have an idea where to start. A first pass at a tune will basically never be perfect, right out of the box, unless it's a totally stock motor. Even having all the cam specs, odds are it'll take acoupla iterations to dial it in.
So, don't worry about it too much. May take a little longer and depending on how you get charged it might cost you a bit more. Other than that, any decent tuner can overcome not having that.











