Did some work on the X5 and when I put everything together, it started fine no problems. When ever I rev up the engine, it sounds like an exhaust leak. The X5 almost resembles a hemi truck. I'm thinking it might be from the intake manifold?
Sound only happens under load...when car is cruising, no sound.
Ideas? Thanks.
Work done:
Valve covers, intake mani gaskets, spark plugs, water pump, vacuum lines around the manifold (OSV area), and hoses.
https://youtu.be/6oPs8iniGFs