United Bimmer Do-It-Yourself Disclaimer:
The following tutorial is meant as a guide and is not
guaranteed to be complete or 100% accurate. By following this DIY, you
understand any work done on your car is at your own risk and we hold no
responsibility if you break something. If you feel uneasy with this
risk, we recommend you take your car to a professional mechanic to have the
work done. Otherwise, enjoy yourself and good luck!
Well, I know this is simple, but as with any mod, you run into a
little modifying here and there, or you are left to come up with some sort
of gameplan. Let me preface this DIY with one simple notion. Make sure your
car is not going to move while it is off the gound. I used ramps and jack
stands for this project.
the old exhaust (different views)
(See Haile, I have the dual cats.... I am surprised your car didn't, or
Here is where the game plan comes into effect. The new Stromung came with no
installation instructions, which often guide you as to what you should do
and when. Well, I started by removing the rear brackets first. Do NOT do
that. Makes the other 4 bolts VERY difficult to get back on! I ended up
re-tightening the rear brackets until I got the other four bolts off.
Here are the bolts you need to remove...
rear bracket (remove last!)
four bolts attaching the exhaust to the catalytic converters...
After fully removing all bolts, (only need to loosen the rear brackets, not
completely remove - which helps installing the new exhaust quickly) you
should be able to wiggle the exhaust free and end up with a nice empty space
Next, install the new exhaust. I chose to cut the box out around the exhaust
so that I could slide it under the car without scratching it. If you leave
the rear brackets installed, you won't need any tools yet. The reinstall
went so fast, I didn't have time for new pics...
Slide the 2 pipes into the receiving end of the catalytic converters first.
One pipe has an extension that allows you to slip the new exhaust pipe over
it to hold it in place (before re-securing with new bolts.
Now slip the 2 muffler ties in with the existing rear brackets. Then tighten
them. Now, finish by securing the 4 bolts at the other end...
You're done! Here is some comparison pics before the install, and some after
install pics... I need new hardware for my setup, but it will have to wait
till tomorrow because it is midnight now!
now that you see how easy it is, save yourself the money and BUY ONE!!! I
recommend understeer.com. Chris is a great guy!