MagnaFlow .or. Flowmaster

[SilverBirdSeven]

S-pipe comes with the magnaflow system.
Problem is that you have do do a little O2 sensor welding

[flyfrito_SS]

Welding??? The site dosn't say anything about welding...

[SilverBirdSeven]

Thats why most people install only from the s-pipe back. Like kidcamaro98 was saying in his post, he first installed only from the s-pipe back and then later put it in.
Go look under your car, the s-pipe has an O2 sensor in it. The new one you will get with an after market system usually wont have a hole in it for the sensor.

[97burnout]

why would the flowmaster rust faster? it won't... my flowmaster is also 3"...