Blowing out your exhaust gasket is not major damage like burnt valves or a warped head, especially not from heat, which is what was stated. Also, I don't know what ECV you have been looking at, but mine almost completely blocked off the exhaust. There was only an opening about the thickness of a credit card between the valve and the wall of the exhaust the entire way around the pipe. It absolutely KILLED my power when it was 100% shut. Way more than the silencer I had before the ECV.
Definition of a nutswinger from the urban dictionary.......
I have long said and will still maintain; SAU has some of the best info about Skylines and RB's on the net. There is, however, a lot of BS that is based on some crap somebody wrote 5-6 years ago not based on any real experience and it just keeps getting repeated and repeated until it's taken as fact by 90% of people out there. If you haven't seen something happen first hand or talked to somebody who has, the STFU.
BTW, I may disagree with Nismoid on more than a few things, but he knows a shit ton about skylines and RB's. The main people I'm venting at are the people blindly agreeing with his wrong point in this thread with no idea what they are talking about.