From the other thread, lets review some of the pics. Here is what a clean valve looks like:
Now, here is a picture of an LT1 valve with only 20k miles on it:
And another:
Here is what carbon buildup looks like after many miles of no catch can and no cleanings:
Obviously, there IS issues withe the LT1 just like every other DI motor. You can CLEARLY see the 20k mile engine having some buildup already.
We don't have some specially engineered masterpice. It is a motor, it functions just fine without a catch can, and will function just fine with a catch can. The catch can WILL prevent a lot of that buildup and not running one WILL result in buildup. PERIOD. You don't HAVE TO use a catch can but you should stop the fear mongering with false info telling others they should NOT use one... give is a rest already...
On a side note, here is what my n54 bmw looked like at just 36k miles before i walnut blasted them. Yes, i am aware the car was twin turbo and tech has come a long way, but if you dont think the LT1 wont have issues I have some bad news for ya...: