car, and some issue develops, 99.9% of the time it's related to the work you did no matter how seemingly unrelated. Years ago I replaced an air cleaner and soon thereafter developed a miss and the car just ran like crap. After parts chasing all day, and being convinced there was no way the symptoms could have anything to do with changing an air cleaner. Finally, I found I had pinched this little wire that ran from the alternator to somewhere I don't recall, but that was the culprit. So back to you, fix every known leak and check all connections that see boost and/or vacuum. The good news is (depending on the size of the leak), you should pick up some performance. Good luck.
