if it was me i would definitely be comparing your settings to what they are recommending. this other link at the bottom seems good too http://www.geocities.com/MotorCity/Speedway/9589/dsbc_manual.html
i wouldn't recommend changing anything unless you're confident you know what you're doing, which you would be after having a good read up on it i bet
if you ain't sure then don't mess with it! just in case
remember i was saying about getting that pipework checked out though since one looked like it was hanging off? and also that you could watch your boost gauge to see what boost it was actually making when you were driving?
i'd start with monitoring the boost gauge & if it seems to be working as is, then just leave it, but get its connections checked by someone who knows what they're doing or by following that guide