I just put on my 3" Magnaflow Exhaust today.
While I really appreciate gwaders meticulous effort, I have to say that if you put the car on a lift, most of this procedure is unnecessary.
The instructions IMO (if on a lift) should read as follows;
1). Remove O2 Sensor from Old Exhaust. This does not need to be removed by the engine, as you will strain the wire about as much as the 3 or 4 twists on the O2 sensor wire. You also won't accidentally break the tabs.
2). Loosen the Jam nuts by the O2 sensor until you can take them off with your fingers.
3). Pop off the Rubber hanger on the Muffler side. A little soap around the flange makes this pretty easy. Repeat 3 more times. Have a friend support the muffler.
4). Remove the front two Jam nuts the rest of the way.
5). Remove Exhaust.
Mounting the Magnaflow 3" Exhaust
1). Put rear muffler on to rubber hangers - Again, soap makes this very trivial.
2). Mount the front pipe section onto the Exhaust flange. Align and tighten most of the way.
3). Place the Clamps onto the middle section and place onto the Front pipe.
4). Push the muffler (this is a very soft push) until the middle section of the pipe clears the muffler and slide on.
5). Put the Clamps onto the exhaust tips and slide into place. Align and tighten.
6). Verify alignment of exhaust pipes is as desired and tighten the bolts firmly. Note: position the threads on the clamps sideways so that the underside has a clean look.
7). Reverse twist the O2 wire the same number of twists you will be tightening (4). Place into the O2 bung and retighten. This way the wire has no twists when you are finished tightening.
8). Enjoy !!! Even at 6000' elevation, my Redline will light up it's tires from a standstill or while rolling at 20 mph (not power-braked). This is just insane
Magnaflow - Serious kudos on the performance and sound Wow.
The main reason that I did not follow Gwaders procedure, is that removing all of the plastic tabs, poppers, clips and bolts did not really provide enough working room to make it worthwhile and is a recipe for damaging the plastic parts and having to buy new poppers etc. . Not to mention, it makes a one hour job, two hours.