 They're not separate. You can't replace separate components. You replace them all together. I see that. You can't read on the dash the boost, so you would have to put a boost gauge on it, and that would be something that somebody at a shop would have where they drill a little hole, they put it right in there, they read it, so when you accelerate, you can see. And if you see there's a lack of boost, that would be the problem. If it gets too bad, it'll set a code. You can't read it from inside either? No, you can read it from a scan tool. Okay.