E46 twin-pipe exhaust

[Pole84]

I really like the look of the chrome twin pipe on 330is. Would a conversion from a single pipe on my 318i be as simple as getting hold of an OEM E46 330i back box and welding it or, or will it be more complicated than that?

[Gad-Westy]

I think the main pipe diameter is different so it will be a little more involved. If you are handy with a welder, then I dare say you could weld an adaptor in before the silencer and then fit the silencer as is.

[bikealarmblair]

If it's like the E46 you'll need a new boot floor too

[MantaMike]

The 330 has two pipes going into the back box as well as coming out of it, wheras the single pipe rear box (318 i presume) only has one pipe through the whole system so it will not directly replace.

I believe the pre 2001 E46 323 has an exhaust box with a single pipe going in and twin pipes coming out, so this may fit but you will probably need to modify it to reduce the pipe diameter.

[Pole84]

hmmm.... thanks guys...

Sounds like a lot of faff just to have a bit of chrome piping sticking out...

Might just save the cash on this and put it into the 330ci/M3 fund....

[bikealarmblair]

Sorry I thought you meant twin pipes

[Gad-Westy]

Pole84 said:

Might just save the cash on this and put it into the 330ci/M3 fund....

It'll be worth it, I'm sure.