Van turns over and starts but only runs for about 3 seconds

So my car was stolen luckily I got it back but unfortunately the problem I'm having is because they ripped out the ignition and it has a security system on it and they lost the key I have replaced the ignition switch cylinder and key it will turn over and crank and start up for about 3 seconds then dies I have put in the codes and reset the security system several times but it is still messed up please help is there any way I can bypass this with a toggle or anything like that
After it starts the second it dies there is this sound up by the break booster it sounds kind like there is a air leak or something. I don't know if that has anything to do with my issue.