I had my test pipe installed yesterday, when I started driving the car home it sounded like the engine was ticking, louder as I stomped on the gas. It only did this under load, not in neutral or stopped. A few people on the audi forum said they had the same problem after getting a test pipe put on... the test pipe makes everything more audible and they said it was an exhaust leak. Should I just get a custom exhaust made instead of getting the leak fixed since I had already planned on getting a full exhaust?