i went to have my car tuned yesterday, and around 5000 rpms the boost would drop from 7 psi to 3psi. we checked the cold side for leaks but found none. ITs a hellion kit with t76 gts. Could it be my waste gate or is the 7 psi just not enough for the turbo to be efficient. But it made 380rwhp and 415 rwtq with 7 degrees of timing during boost and a/f at 11.8 with the drop off of 4 psi at top. But she will put out a hole lot more if we can find the problem. Any suggestions.