API Developers. If you are a Google Apps API developer and use ClientLogin authentication, after you enroll in 2-Step Verification, you'll need to use an application-specific password in place of your regular password.
Answers. Best Answer: It's fine to reuse ear plugs as long as you clean your ears each time before inserting them. You'll need to replace them occasionally, depending on how often they're used. I've found that the yellow cylindrical ones work better and stay clean longer than the standard orange ones.
When they are used, the exhaust pipes from the cylinder heads to the muffler are reused, with new slip-on mufflers added to replace the stock ones. These aftermarket mufflers look and sound different from the stock ones, making them a very attractive modification.