88mazdarx7turbo

ok yesterday i was in the process of puttin on my MBC.. and i took off the wastegate line in order to put in the controller but then i accidentaly cut it wrong. so i had to try and get something on there to get it running for a couple days.. and i put on a hose which was slightely larger than the original wastegate line and now when i start to boost i hit cut out .. and on my boost gauge it shows me running 9 psi.. im just wondering if the slightely larger hose would have anyting to do with this problem.. any sugjestion will help,, thanks