You can see my mods below... I just put in my new forge 007 last weekend. Yesterday and today my boost is pulsating and only gets to 15-17 when I floor it. But, in 3rd 4th and 5th once boost spikes it drops 5-7psi then spikes again rapidly over and over. Should I change the spring in the 007? I put the one rated 15-20 PSI in it (yellow). It is bad though cuz I didn't pull away from this old maxima I was draggin until I got into 4th.

 

Bump...

 

probably either your wastegate or your DV spring. its probably easier to try the DV first, if its not that then its your wastegate.

 

Turbo is brandnew...Is the yellow 15-20 spring not the right one for k03 GIAC?