Changing rear muffler on a B4 RSK??

[Garryg]

Just found this information on another website......

"An electronically controlled rear muffler is used to keep the B4 quiet at low road speeds. The pipe that leads into the rear muffler is divided in two, with one pipe equipped with a flapper valve. The ECU - working with an actuator and cable - opens this valve when travelling at medium-to-high road speeds. This increases exhaust gas flow"

I was thinking about changing the rear muffler on my B4 with an aftermarket one.....Will this affect the way the ECU operates, or show any faults if I do change?

Cheers

[wrx_lou]

I thought this was a feature on the older models?

[Garryg]

I have a 2001 and looking at this it certainly has a second pipe from the rear of the muffler.....

Most of the aftermarket ones I have looked at only have the one inlet to the rear muffler??

[Guest]

I changed my mates rear muffler on his 2000 RSK... I just disconnected at the muffler and tucked the line into the rear guard and disconnected in the boot...

[Garryg]

 DarkCrystal GTB said:

I changed my mates rear muffler on his 2000 RSK... I just disconnected at the muffler and tucked the line into the rear guard and disconnected in the boot...

Cheers....Just had a look today and the cable wasn't even there!!! I've taken off the spring and jammed it open at the moment... Sound wise, not a lot of difference!

Does anyone know if an STI tailpipe of a V8 Impreza would fit there's one on trademe at the moment? I can always cut the pipe and use a bit of flexi-pipe if need be??

Cheers

[D-Style]

I put an after market muffler on my Blitzen. Just disconnect the flex line. but keep the little control unit connected.

The B4 exhuasts are much different to the other subarus. So no straight swap from other models (unless its the later BL/BP model) And then the wagon rear section is longer than the Sedan.

If you willing to get the V8 muffler fitted by Pitstop or the like, then go for it. Its not a simple swap.