I 've recently been toying with the ca18et. what is the stock boost set at in it. I've heard 5, 5.5 and now i'm not sure. Also what can it be turned up to and run safely? Also, is there anyway you can make the pssshh sound on a stock engine. I know that in the supras 86.5-92 you can do it by pulling and plugging some hoses.