Compact M3 exhaust

[notax]

I now have the parts to fabricate an exhaust for my compact. If I design it to fit the 325 lump will it be in the correct place when I upgrade to an M3 engine?

Also would you bother using the sport cat I bought? If not it will be a single box system - mechanic would prefer not to use it and doesn't think it would reduce noise much anyway. MOTs not an issue

[avtovaz]

If you fit volvo power, you wont need a cat

[ultegra]

Similar query - anyone done a back-box to fit from a standard twin tube e36 M3 centre section in an e36 Compact with an S50B30?

[M3 Compact]

Similar query - anyone done a back-box to fit from a standard twin tube e36 M3 centre section in an e36 Compact with an S50B30?

We use a custom made 2 in to 1 from the OE centre section & through the beam.









I used it with a GpA titanium Scooby back box in my first compact, but there's no/less room now due to the boot tank well.










It's too noisy now with nothing other than the OE front/centre section.

Very too noisy.

[notax]

In the end I went for a full custom made system - twin pipe throughout up to and including the back box. Cost around £800 but is a proper job and easily passes noise at around 96db - sounds quite nice and at least the noise check is one less thing to worry about...