I just got my b16 totally rebuilt by a professional. I have put about 100 miles on the motor. It is turbo and only running a basemap. It starting making a chatter sounded like the valves to me. I have been extremely easy on the car. I haven't taken it over 3500 rpm because of basemap. It seem to start making this sound within the last 30 miles or so. Will this go away after tune or is this something to worry about???

 

Check your valve lash if it's coming from your top end. As the cam breaks in, the lash will likely slightly increase and need to be adjusted. There's a jam nut/valve lash adjustment tool like this one on Amazon that is supposed to work well. 10mm is for DOHC VTEC. I ordered a Powerbuilt one a while back and it feels plenty sturdy to me, and it looks just like the one in the link. Otherwise there are people who make their own out of a wrench and screwdriver or a socket and a piece of rod.
http://www.amazon.com/Alltrade-64882...8902598&sr=8-1

 

Ok thanks.