I saw from a couple others that the brass was awesome, but didn't blow as hot as the OEM core. So yours is hot? When my cheap one fails in a few years maybe I'll give Brassworks another look.Update, thebrassworks core is a beast, it is heavy, copper with brass connections. High temp painted. Fit was perfect and blows hot..slight smell for about a minute then gone...should last until we can no longer run combustion engines.. I highly recommend.