Leak test your whole system that way you find any leaks that you may not know about. I bought one of these and it works good. I know you can make them but for the price its good.
http://www.turboboostleaktesters.com/servlet/StoreFront

 

I agree. Don't make a big deal out of it. You don't want the drama with the mom if you're trying to stick with her.

But yeah, if you're making 21psi you should be fine. I doubt the damage would affect your air intake temps by much.

 

That's a pretty good price for a pre made kit. Between the gauge, the brass couplers, the silicon coupler and associated hardware, I would have a hard time building one for much less.

 

I would rather be safe than sorry, do a leak test, if you are unable to do that, just replace it and be done with it.

 

Sure there's one you can buy, but why spend $20-$30 on something you can make yourself for like $6 at Home Depot.

On a side note AGP Turbo sells a nice boost leak tester