BOV? If it did it above 5g's when you're not shifting, I'd say exhaust leak. How is your boost gauge hooked up anyway? Do you know it works?

I'm not in Nagg's head this weekend. I'll holler at you tomorrow and see if we can work something out.

PS: The galant is boosting at 20 PSI tonight. We got everything back together on it except the AC and it's running great with the new fuel system. Nobody ever expects this thing to be fast. It's hilarious to see people's expressions when it pulls. Such a fugly car. I love it. Tee hee.