I have had problems with some funky readings and more of an issue tearing apart my front exhaust hanger bracket. Well my BAD! Poor ,loose and mis-aligned install was the culprit!
Original install was done by a shop that takes car of my company vehicles, great for Ford 350 vans but....
I had a shop that has been working on my BMW and Porsche start fresh with a new hanger bracket. They took the APR Turbo back exhaust out and rehung entire system. They had to modify stock bracket as APR front hangers were off. APR did offer to replace but I had to send back before I would get new so I ate a few $$$$.They also used some sort of exhaust sealant at pipe conections and took time to hang it right and tight. Exhaust has no more rattles, bracket appears fine after 600 hard miles last week and car runs and sounds better.
It pays to go to those who know!
Scott
06 A3 2.0T front drive 6 Speed Lava Grey
APR Turbo back
GIAC
EVO CAI
STOPTECHS
H&R Springs and Rear bar
Bilsteins Sports
Nuespeed stiffener thingy
Upgrade fuel rail pump

21,000 track and hard street miles and going strong. I love this car!

PS I hate running the stock 17's, spacers & Nokian snows (especially this winter!). The OZ Wheels with Yoko AVS gave much greater limits!

 

Congrats! It does pay off to take it to a shop that knows what their doing. I slipped the exhaust mechanic a $20 when he did mine. He even went as far as giving me a tour underneath the car with the new exhaust.

 

I'm glad you got everything straight. Nice to know that my APR DP won't be shearing off the brackets soon.

Cheers!