From what i know(very little) 300 would be a good price for a custom tune. The fact that they are not using a dyno......that confuses me......I. called up b&g today to get a price on making a custom tune for my car with the predator, they told me 300, and it didn't need to go on the dyno. What do you guys think about that, it seems kinda expensive to me, since the whole predator was only 375.00. How much should something like this run, or is that a normal price?