I know the great miniprofiler is added on umbraco since version 6.1.2... I'm working with a v7 in this case, I've set this on my global.asax:

        protected void Application_BeginRequest()
        {
            if (Request.IsLocal)
            {
                MiniProfiler.Start();
            }
        }

        protected void Application_EndRequest()
        {
            MiniProfiler.Stop();
        }

The @MiniProfiler.RenderIncludes() is also added in my _layout.cshtml.

I've added the handler on the web.config

 <add name="MiniProfiler" path="mini-profiler-resources/*" verb="*" type="System.Web.Routing.UrlRoutingModule" resourceType="Unspecified" preCondition="integratedMode" />

But it doesn't seem to work. Any help is appreciated! (:

Thanks.