I use the stock pan with my Team G with no problems. I think if he did not change the pan out when he put the intake on that could be the problem. Have you cranked it up and let it run and sprayed wd40 around the intake to see if it changed rpm? Easy way to tell if it is leaking or not.

If he did not change the pan out it would have been crushed around the ports and could cause this.. The pan down here at auto-zone is $20.