I have just got my twin setup running after it has set in the shop for about two years . I ran the hx 35 with the bottom turbo unhooked and the tial wastegate shuts it down at 21 pounds of boost. With both turbos working I am getting 55 total boost and 28 out of the bottom turbo. The exhaust temps are below 1100. I guess my question is are the turbos making the right boost or is the big one a little to high. It is a bht3e with a 22cm exhaust housing on it. The top is a hx35 with a 58 mm wheel on it. I have 38 mm tial wastegate on it with no boost hooked up to it . This is on my 97 auto.