I just got the car tuned on 64 mm fp red built motor,hks 280.cams,hallman mbc , the.prob I'm have is I spiking like 32 lbs then the cars tapering down to 24 , this seemed like alot of loss but the tuner said it normal that its a small turbo, also when the boost.spikes I'm getting 6-8 counts of knock! What do you guys think is there something causing the spike or should I find another tuner?

 

Was the car tuned by a reputable tuner?