I had the Unichip installed for about a month before I installed the boost controller solenoid. Before the installing the solenoid, I was running stock boost at about 5.5-6psi with my current mods (see signature). Now, after i installed the solenoid, on LOW boost setting, I am hitting about 9psi and on HIGH boost setting, I am hitting what seems to be over 15psi (my SW boost gauge only goes to 15psi). I think I heard a little pinging on HIGH boost setting at high rpms. Note, that I'm on california 91 octane. I didn't want to repeat it, so i didn't boost again on HIGH setting. On the LOW setting, it's great, runs great, pulls very, very strongly, no complaints there.
I'm not really having the same problem as you guys, cuz I'm running a stock exhaust. I'm wondering if anybody has any other info. The solenoid was barely used by the previous owner, he said he ran it once, but didn't want to run it on HIGH boost cuz he didn't have any other mods, so I don't think it's the solenoid. Do you think it's just because of the mods that i have? I am supposed to be picking up J-pipe back exhaust soon too, i hope this won't add to this issue. However, after I do get my exhaust, I will be taking it to a Unichip tuner near me to get a custom tune and some dyno time. I want to see what kind of numbers i am making. Right now, it feels like i am probably at about 170whp. with the exhaust, it will probably be a bit higher.
Any suggestions or comments?