Yes, the browser emulation change be modified
To modify the browser Emulation
1. Open the RTS
2. Select browser > browser Emulation
By default the Browser properties are defaulted to cover the most common
This displays information about the browser that is to be emulated. All Internet Vuser headers include a ''User Agent'' header that identifies the type of browser (or toolkit for Wireless) that is being emulated. For example, User-Agent: Mozilla/3.01Gold (WinNT; I) identifies the browser as Netscape Navigator Gold version 3.01 running under Windows NT on an Intel machine.
Click ''Change...'' to change the User Agent header. Specify the browser type, browser version, language, and operating system or enter a custom User Agent header.
Please Note: that LoadRunner Vuser doesn't really open a browser during replay or load testing. LoadRunner just send the Http coded requests to the servers and record the time for the response from the server.