Ok tech guys, I'm officially stumped and looking for some advice. I have 61k miles on the S4 and snapped my timing belt a couple months ago. I've been doing a rebuild in the garage and got it back together. I had the heads rebuilt w/ all new valves & stem seals, replaced the thermostat, water pump, idler roller and the tensioner. I put everything back together and turned the key and it cranks over but won't start. I pulled a couple coil packs and i have spark, and I can smell some fuel when it's cranking too. I ran a compression test and it's 150+ on all cylinders. It's throwing a code P1392 (Open or short to B+ for left bank cam sensor). I'm thinking the next logical step is to take off the y pipe and reseat all the electrical connections, but I really wish I could narrow it down a little bit more to what it might be, or if theres a sensor I'm missing. Before anyone asks, I double checked that the sensor is plugged into both cam sensors. I pulled them off and reseated them. Thoughts?

Rebuild Photo Album is here - Vehicular Surgery - Imgur

 

Check your cam timing. Could be possible you have the belt not properly lined up.