So i've had the car for about 2 months. It has BPM front mount intercooler, BPM short ram with a crappy spectre filter, and a HKS blow off valve. The turbo is stock and the exhaust is also stock. Also it has a turbo timer and a boost gauge. The more I think and research the more it is becoming obvious that this car was probably heavily modded, then stripped of some of its parts before the sale. Any way, i have it now and the issues are as follows. The car boosts a maximum of 5-6 psi, and not until around 4000 rpms. I've found that the vacuum lines going from the actuator to the turbo, specifically the line that is supposed to have the restrictor pill, are incorrect. This would create a 7 psi maximum boost, correct? Also the car recently threw CEL p0171, which is lean condition bank 1. The car was running ok, some slight hesitation and stumbling idle. Today, I was checking all my connections on the intercooler lines, and found 1 hose clamp that was broke, and very loose. I replaced the hose clamp and tightened, then disconnected the negative terminal, pumped brake a couple times, re-connected and attempted to start and the car would not stay running, stuttered very badly and would barely respond to any amount of throttle. I heard some popping under the hood and smelled fuel. Any help would be greatly appreciated.