So me and my buddy were tuning his gsx yesterday. He had just got a custom intake manifold made. We were on 29psi and full throttle, when he let off the gas we heard a pop(resembling a gunshot). He tapped the trottle and it sounded like it was a massive exhaust leak. the A/F gauge and boost gauge wasnt reading. We pulled over to find out that the intake manifold had blew up, literally. The whole bottom plate of it was blown completely off. the only thing holding it up was the break booster line.